SOLUTION: find the period of the graph of the equation y=3cos(x/2+ pie)

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Question 83610: find the period of the graph of the equation y=3cos(x/2+ pie)
Answer by uma(370) About Me  (Show Source):
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The general equation is y = ACos(Bx - C) whose period is 2Pi/B
Comparing the given function y = 3cos(x/2 + Pi) with the above, we find that B = 1/2
Thus the period of the given function is 2PI/(1/2)
= 4Pi