Establish identity. cos( + k) = (-1)k cos , k any integer

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Establish identity.

cos(θ + kπ) = (-1)k cos θ, k any integer

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Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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Question Posted: Mar 09, 2019 07:59 AM

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Establish identity. cos( + k) = (-1)k cos , k any integer

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Precalculus

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