Question

Name the reference angle in radians for an angle of -315 degree

Answer 1

Answer:

$\frac{-7\pi }{4}$

Step-by-step explanation:

$\frac{-315}{360} = \frac{x}{2\pi }$

x = (-315* 2$\pi$)/360 =  - 630

- 21 $\pi$/12 = -7