Question

If the angle -270° rotates 180° counter-clockwise, what is the new measurement of the co-terminal angle?

___°

Answer 1

Starting with the angle of -270°, adding 360° gives us 90° (which is a coterminal angle with -270°).

If we rotate 180° counter-clockwise from 90°, we end up at the angle of 270°. Therefore, the new measurement of the coterminal angle is 270°.

I hope this helps :)