Ask Questions - Get Answers [ Trigonometry

Thursday 8th January 2009 05:59:39 AM

Home/Science & Technology/Mathematics/Trigonometry

Return to Question Board

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

Your Options
Additional Options are only visible when you login! !