Posted by Anonymous on Wednesday, July 11, 2012 at 12:19am.
determine the amplitude,period and phase shift of y=2cos(pix3)

trig  Reiny, Wednesday, July 11, 2012 at 7:14am
rewrite it in the most general form
y = 2 cos π(x  3/π)
amplitude = 2
period = 2π/π = 2
phase shift = 3/π units to the right