Question

Find radian measure of degrees.. also how would I find this answer on a calculator

Answer 1

FORMULA

$\pi rad=180^0$

Convert 120 degree to radian by multiplying by pi and dividing by 180

$\begin{gathered} \Rightarrow\frac{120\pi}{180} \\ \frac{2\pi}{3} \end{gathered}$

Given a negative angle, we add 360 to get its corresponding positive angle.

The answer can also be 2.09 rad