# What is (-5pi)/6  radians in degrees?

You simply have to substitute $\pi$ with 180 degrees
$\frac{- 5 \pi}{6} \to \frac{- 5 \left(180\right)}{6} \to - 150 \mathrm{de} g r e e s$
$\left[\left(360 \mathrm{de} g r e e s\right) + \frac{- 5 \pi}{6}\right] \to \left[\left(360 \mathrm{de} g r e e s\right) + \frac{- 5 \left(180\right)}{6}\right] \to 210 \mathrm{de} g r e e s$