Lei de seno e cosseno Flashcards by Unknown Unknown

Q

Qual a fórmula de cosseno?

A

x^2 = l1^2 + l2^2 - 2.l1.l2.cos

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Q

Qual a fórmula de seno?

A

Basta fazer regra de 3
L1/sen = x/sen

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Q

Dois lados de um triângulo medem 8 m e 10 m e formam um ângulo de 60°. O terceiro lado desse triângulo mede:

A

2.raiz21

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