quiz da matemática
TRANSCRIPT
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1- Cosseno é caracterizado por
a) Cateto adjacente sobre hipotenusa b) Cateto oposto sobre hipotenusac) Cateto oposto sobre cateto adjacente
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2- O seno é caracterizado por:
a) Cateto adjacente sobre hipotenusa b) Cateto oposto sobre cateto adjacentec) Cateto oposto sobre hipotenusa
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3 – A Tangente é caracterizada por:
a) Cateto oposto sobre hipotenusab) Cateto oposto sobre cateto adjacentec) Cateto adjacente sobre hipotenusa
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4 – a área do quadrado é:
a) Lado x ladob) Base x altura / 2 c) Base menor + Base maior x altura /2
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5 – Dê os respectivos resultados de (-2)², (-2)³, - 2²:
a) 4, -8 e -4b)-4, -8 e 4c) 4, 8 e 4
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6- Simplifique a equação (x + y).(x – y) :
a) x² + y².b) x² + xy + xy + y².c) x² - y².
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7- Simplifique a equação (a - b)²:
a) a² - 2ab + b²b) a² - b²c) a² + 2ab +b²
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8- Quanto vale i²:
a)0 b)1c) -1
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9- A fórmula do Teorema de pitágora é:
a) a²= b² + c²b) a² = b²+c² - 2.a.b cos c) (a+b)²
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10 – Lei dos cossenos:
a) a²= b² + c² - 2.b.c. Cos â b) a²= b² + c²c) a²=b²
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