SOLUTION: Prove the identity 4(sin^4(x) - sin^4(x))/sin(2x) = sin (2x) I Tried up to here but im not sure 4 (sin^2 x - sin^2 x) (sin^2x + sin^2 x)/ (sinxcosx+cosxsinx)

Question 470616: Prove the identity
4(sin^4(x) - sin^4(x))/sin(2x) = sin (2x)
I Tried up to here but im not sure
4 (sin^2 x - sin^2 x) (sin^2x + sin^2 x)/ (sinxcosx+cosxsinx)
Answer by Tatiana_Stebko(1539) (Show Source): You can put this solution on YOUR website!
Something wrong with this problem, because (sin^4(x) - sin^4(x))=0
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