Question

qual o seno
$\frac{9\pi}{2}$
rad?

Answer 1

Boa noite

$\dfrac{9 \pi }{2}= \dfrac{8 \pi }{2}+ \dfrac{ \pi }{2}=4 \pi + \dfrac{ \pi }{2}$

$sen \dfrac{9 \pi }{2} =sen \dfrac{ \pi }{2}=1$

Resposta :  sen 9π / 2 =1