Prove the identity. cos 3 = 4 cos 3 3 cos

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Prove the identity.

cos 3θ = 4 cos³θ – 3 cos θ

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Calculus Early Transcendentals

ISBN: 9781337613927

9th Edition

Authors: James Stewart, Daniel K. Clegg, Saleem Watson, Lothar Redlin

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Question Posted: Apr 21, 2021 06:02 AM

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Prove the identity. cos 3 = 4 cos 3 3 cos

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Consider left hand side expression cos3 cos 2 Use addition ...View the full answer

Calculus Early Transcendentals

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