Show that sin 4 = 3/8 1/2 cos(2) + 1/8 cos(4).

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Show that sin⁴ θ = 3/8 – 1/2 cos(2θ) + 1/8 cos(4θ).

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Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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Question Posted: Mar 09, 2019 08:14 AM

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Show that sin 4 = 3/8 1/2 cos(2) + 1/8 cos(4).

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sin 4 sin 2 2 1cos 20 2 12cos ...View the full answer

Precalculus

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