Question

What are the phase shift and period for the function y=2cos1/2(0+30°)-4

Phase shift 30° left, period 720°
Phase shift 30° right, period 330°
Phase shift 30° right, period 90°
Phase shift 30° left, period 180°

Answer 1

Answer:

The last one is because the phase shift happens to the left.

And the period 2pi/2