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Question Details	Asked By	Asked On
identities	britk1	03/10/07
Hello, I have been working on this problem...and i can't quit figure it out. How do I prove this identity? sin x cos^3 x - cos x sin^3 x = 1/4 sin 4x

Summary of Answers Received	Answered On	Answered By	Average Rating
1. sin(4x) = 2sin(2x)cos(2x) = 2[2sin(x)cosx)][cos^2(x)-sin^2(...	03/11/07	raridon

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