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9 December, 04:50

Find an identity for cos (4t) in terms of cos (t) ?

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  1. 9 December, 05:15
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    The question in the problem wants to calculate the identity for cos (4t) in terms of cos (t) and base on the given and further computation, I would say that the answer would be 2cos^2 (2t) - 1. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification
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