#### Answer

$\dfrac{2\pi}{3}$

#### Work Step by Step

We have, $ degree=120^{\circ}$
In order to find the result, we need to change degrees into radians by multiplying the given angle by $\dfrac{\pi}{180}$.
$ 120^{\circ} \times \dfrac{\pi}{180}=\dfrac{2\pi}{3}$