Question

Qual o valor de sen 15pi/6 rad? Por favor, deixe a conta. Grata!

Answer 1

$\Large\boxed{\begin{array}{l}\sf\dfrac{15\pi}{6}=\dfrac{12\pi}{6}+\dfrac{3\pi}{6}=2\pi+\dfrac{3\pi}{6}\\\\\sf \dfrac{3\pi\div3}{6\div3}=\dfrac{\pi}{2}\\\\\sf \dfrac{15\pi}{6}=2\pi+\dfrac{\pi}{2}\\\sf ent\tilde ao\\\sf sen\bigg(\dfrac{15\pi}{6}\bigg)=sen\bigg(\dfrac{\pi}{2}\bigg)=1\end{array}}$