pastpaper.lk · al/2015/10/s-1 13.(a) a, b c z— (i) ac = 12 = c = 2 3 czeô. ca (ii) bc = 12 06?...

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Page 1: pastpaper.lk · AL/2015/10/S-1 13.(a) A, B C z— (i) AC = 12 = C = 2 3 czeô. CA (ii) BC = 12 06? a, b, c em d S (iii) (AA + DO, g OBO. cysoesœ, A B DC (b) z = cos + isin cteô;
Page 2: pastpaper.lk · AL/2015/10/S-1 13.(a) A, B C z— (i) AC = 12 = C = 2 3 czeô. CA (ii) BC = 12 06? a, b, c em d S (iii) (AA + DO, g OBO. cysoesœ, A B DC (b) z = cos + isin cteô;
Page 3: pastpaper.lk · AL/2015/10/S-1 13.(a) A, B C z— (i) AC = 12 = C = 2 3 czeô. CA (ii) BC = 12 06? a, b, c em d S (iii) (AA + DO, g OBO. cysoesœ, A B DC (b) z = cos + isin cteô;