document.write( "Question 293733: I need help solving this using the double angle formulas on one side only:\r
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Algebra.Com's Answer #211964 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"Cos%282x%29=+%281-Tan%5E2x%29%2F%281%2BTan%5E2x%29\"\r\n" );
document.write( "\"Cos%282x%29=+%281-Tan%5E2x%29%2F%28Sec%5E2x%29\"\r\n" );
document.write( "\"Cos%282x%29=+%281-Tan%5E2x%29%2A%281%2F%28Sec%5E2x%29%29\"\r\n" );
document.write( "\"Cos%282x%29=+%281-Tan%5E2x%29%2A%28Cos%5E2x%29\"\r\n" );
document.write( "\"Cos%282x%29=+Cos%5E2x-%28Tan%5E2x%29%2A%28Cos%5E2x%29\"\r\n" );
document.write( "\"Cos%282x%29=+Cos%5E2x-%28%28Sin%5E2x%29%2F%28Cos%5E2x%29%29%2A%28Cos%5E2x%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"Cos%282x%29=+Cos%5E2x-Sin%5E2x\"\r\n" );
document.write( "\"Cos%282x%29=+Cos%282x%29\"\r\n" );
document.write( "\r\n" );
document.write( "Edwin
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