document.write( "Question 174276: I need help verifying this identity.\r
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document.write( "cot^2x-cos^2x = (cot^2x)(cos^2x)\r
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document.write( "So I tried:\r
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document.write( "(cos^2x)/(sin^2x) -cos^2 = (cos^2x)/(sin^2x)(cos^2x)\r
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document.write( "But after that I'm kind of stumped. Any help with future steps would be appreciated! \r
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document.write( "Thanks so much!
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document.write( "
Algebra.Com's Answer #129221 by stanbon(75887)![]() ![]() ![]() 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. \n" ); document.write( " |