9. Determine o cosseno de 1935° e marque a opção correta. a...

Determine o cosseno de 1935° e marque a opção correta.

a) $\frac{\sqrt{2}}{2}$ b) 1 c) $\frac{1}{2}$ d) $\frac{-\sqrt{2}}{2}$

$9. Determine o cosseno de 1935° e marque a opção correta. a) $\frac{\sqrt{2}}{2}$ b) 1 c) $\frac{1}{2}$ d) $\frac{-\sqrt{2}}{2}$$

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