Find reference angle of each angle.
1) -240 degrees
My answer: 30 degrees
Is this correct?
I believe that a -240 degree angle equates to a +120 degree angle (since they have to sum to 360 degrees). In that case, the acute angle between the terminal side of the +120 degree angle and the X axis would be a 60 degree angle (180 degrees - 120 degrees).
- Steve J