Question

reduzindo ao 1 quadrrante e consultando a tabela abaixo o valor de sen 150 e igual a:

Answer 1

$sen 150 = sen \frac{150\pi}{180}=sen\frac{5\pi}{6}$

$180=\pi\\150=\frac{5\pi}{6}\\180-150=30=\frac{\pi}{1}-\frac{\5\pi}{6}=\frac{6\pi-5\pi}{6}=\boxed{\frac{\pi}{6}}$

$\boxed{Sen(\frac{\pi}{6})=\frac{1}{2}}$