#### Answer

$\frac{5\pi}{6}radians$

#### Work Step by Step

In order to convert degree measures to radians, we must multiply the given degree measure by $\frac{\pi}{180}$ and simplify.
$150^{\circ}=150\times(\frac{\pi}{180}radians)=\frac{150\pi}{180}radians=\frac{5\pi}{6}radians$