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26 July, 19:20

What are the phase shift and period for the function y = 3cos[4 (θ + 60°) ] - 2?

Phase shift = right 60°, period = 90°

Phase shift = right 60°, period = - 90°

Phase shift = left 60°, period = 90°

Phase shift = left 60°, period = - 90°

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  1. 26 July, 21:02
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    The plus sign inside the parenthesis indicates that the shift is to the left, And the formula for the period is 2pi/B and our B is 4, so 2pi/4 = pi/2 which is 90. So your answer is the third one down, left 60 period 90
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