div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails1jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails2jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails3jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails4jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails5jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails6jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=7Page 7button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=7 data-page=7 class=ts-thumb lazyload alt=Page 7: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails7jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=8Page 8button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=8 data-page=8 class=ts-thumb lazyload alt=Page 8: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails8jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=9Page 9button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=9 data-page=9 class=ts-thumb lazyload alt=Page 9: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails9jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=10Page 10button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=10 data-page=10 class=ts-thumb lazyload alt=Page 10: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails10jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=11Page 11button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=11 data-page=11 class=ts-thumb lazyload alt=Page 11: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails11jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=12Page 12button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=12 data-page=12 class=ts-thumb lazyload alt=Page 12: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails12jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=13Page 13button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=13 data-page=13 class=ts-thumb lazyload alt=Page 13: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails13jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=14Page 14button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=14 data-page=14 class=ts-thumb lazyload alt=Page 14: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails14jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=15Page 15button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=15 data-page=15 class=ts-thumb lazyload alt=Page 15: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails15jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=16Page 16button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=16 data-page=16 class=ts-thumb lazyload alt=Page 16: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails16jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=17Page 17button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=17 data-page=17 class=ts-thumb lazyload alt=Page 17: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails17jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=18Page 18button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=18 data-page=18 class=ts-thumb lazyload alt=Page 18: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails18jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=19Page 19button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=19 data-page=19 class=ts-thumb lazyload alt=Page 19: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails19jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=20Page 20button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=20 data-page=20 class=ts-thumb lazyload alt=Page 20: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails20jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=21Page 21button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=21 data-page=21 class=ts-thumb lazyload alt=Page 21: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails21jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=22Page 22button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=22 data-page=22 class=ts-thumb lazyload alt=Page 22: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails22jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=23Page 23button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=23 data-page=23 class=ts-thumb lazyload alt=Page 23: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails23jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=24Page 24button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=24 data-page=24 class=ts-thumb lazyload alt=Page 24: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails24jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=25Page 25button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=25 data-page=25 class=ts-thumb lazyload alt=Page 25: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails25jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=26Page 26button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=26 data-page=26 class=ts-thumb lazyload alt=Page 26: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails26jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=27Page 27button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=27 data-page=27 class=ts-thumb lazyload alt=Page 27: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails27jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=28Page 28button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=28 data-page=28 class=ts-thumb lazyload alt=Page 28: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails28jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=29Page 29button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=29 data-page=29 class=ts-thumb lazyload alt=Page 29: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails29jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=ts-pagebutton class=gotoPage data-page=30Page 30button div class=ts-imageimg data-url=teachingbd-2018-03-14-376-ans-3-tan200-tan-200-i-3-tan-600-a-yhtmlpage=30 data-page=30 class=ts-thumb lazyload alt=Page 30: Teachingbd · 2018-03-14 · 376 Ans 3 tan200 - tan 200 I -3 = tan 600 A = + + y cos a cos COs J I — tan a = I + tan 16 cosA cos 2A cos 4A cos 7A = I a + = cos2p = cos2p loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentspubreader031viewer20220130205ebb7fc7f64d3a1ee46fd4a9html5thumbnails30jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdiv