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20 December, 14:38

What is the phase shift and period for the function y = 5cos2 (θ + 45°) - 7?

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  1. 20 December, 16:13
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    5cos2 (x + 45) - 7

    The period for cos = 2pi/k

    The k = 2 so the period = pi

    The phase shift is 45 degrees to the left.
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