document.write( "Question 174276: I need help verifying this identity.\r
\n" ); document.write( "\n" ); document.write( "cot^2x-cos^2x = (cot^2x)(cos^2x)\r
\n" ); document.write( "\n" ); document.write( "So I tried:\r
\n" ); document.write( "\n" ); document.write( "(cos^2x)/(sin^2x) -cos^2 = (cos^2x)/(sin^2x)(cos^2x)\r
\n" ); document.write( "\n" ); document.write( "But after that I'm kind of stumped. Any help with future steps would be appreciated! \r
\n" ); document.write( "\n" ); document.write( "Thanks so much!
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Algebra.Com's Answer #129221 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
cot^2x-cos^2x = (cot^2x)(cos^2x)
\n" ); document.write( "So I tried:
\n" ); document.write( "[(cos^2x)/(sin^2x)] - cos^2 = [(cos^2x)/(sin^2x)](cos^2x) \r
\n" ); document.write( "\n" ); document.write( "---------
\n" ); document.write( "Multiply both sides by sin^2(x) to get:
\n" ); document.write( "cos^2(x) - sin^2(x)*cos^2(x) = cos^4(x)
\n" ); document.write( "(cos^2(x)(1 - sin^2(x)) = cos^4(x)
\n" ); document.write( "(cos^2(x))(cos^2(x)) = cos^2(x)*cos^2(x)
\n" ); document.write( "-----------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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