document.write( "Question 470616: Prove the identity
\n" ); document.write( "4(sin^4(x) - sin^4(x))/sin(2x) = sin (2x)\r
\n" ); document.write( "\n" ); document.write( "I Tried up to here but im not sure
\n" ); document.write( "4 (sin^2 x - sin^2 x) (sin^2x + sin^2 x)/ (sinxcosx+cosxsinx) \n" ); document.write( "

Algebra.Com's Answer #322792 by Tatiana_Stebko(1539) $\"\"$ $\"About$

You can put this solution on YOUR website!
Something wrong with this problem, because (sin^4(x) - sin^4(x))=0 \n" ); document.write( "

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