Question

Choose all of the angles that are coterminal with -150 degrees

-510 degrees
-210 degrees
150 degrees
210 degrees
570 degrees

Answer 1

For any integer n, all angles -150° n×360° will be coterminal with -150°. The appropriate choices are
   -510° . . . . n=-1
   210° . . . . n = 1
   570° . . . . n = 2