SOLUTION: Verify the identity: sin4x=4sinxcosx - 8 sin^3cosx

SOLUTION: Verify the identity: sin4x=4sinxcosx - 8 sin^3cosx

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Question 974517: Verify the identity: sin4x=4sinxcosx - 8 sin^3cosx
Answer by FrankM(1040) (Show Source): You can put this solution on YOUR website!
For this solution, we're going to use 2 double angle equations:

and

and it looks like this

.

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