Find the point on the Unit Circle associated with the rotation -9π/2 options: (0 , -1) (0 , 1) (1 , 0) (-1 , 0)

Answer 1

-9π/2 = -(4 1/2)π

-4π is two full rotations, so all that maters is the -1/2π, which would be 90° clockwise, placing the point at (0, -1).