document.write( "Question 400534: Vertify is an identity
\n" ); document.write( "Sin2x=2cotx(sin^2x) \n" ); document.write( "
Algebra.Com's Answer #283514 by lwsshak3(11628)\"\" \"About 
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Vertify is an identity
\n" ); document.write( "Sin2x=2cotx(sin^2x)\r
\n" ); document.write( "\n" ); document.write( "starting from the right-hand side
\n" ); document.write( "2cotx(sin^2x)
\n" ); document.write( "=2(cosx/sinx)(sin^2x)
\n" ); document.write( "=2(cosx/sinx)(sin^2x)
\n" ); document.write( "=2sinxcosx=sin2x
\n" ); document.write( "ans:right-hand side=left-hand side\r
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