Question

qual o sen(2005pi/3)

Answer 1

$\frac{2005\pi}{3} . \frac{1}{2\pi } = \frac{2005\pi }{6\pi } = \frac{2005}{6} =334\frac{1}{6}$

$\frac{1}{6} . 2\pi = \frac{2\pi }{6} =\frac{\pi }{3}$

Logo, $\frac{\pi}{3}$ é o arco congruo de $\frac{2005\pi }{3}$. Isso significa que o sen($\frac{2005\pi }{3}$) = sen($\frac{\pi}{3}$) = $\frac{\sqrt{3} }{2}$