document.write( "Question 172634: Verify the identity:\r
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Algebra.Com's Answer #127644 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
Prove the identity:
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document.write( "\"Sin%28x%29%281-2%2ACos%5E2x%2B+Cos%5E4x%29+=+Sin%5E5x\"\r\n" );
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document.write( "Factor the expression in the parentheses:\r\n" );
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document.write( "\"Sin%28x%29%28%281-Cos%5E2x%29%281-Cos%5E2x%29%29+=+Sin%5E5x\"\r\n" );
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document.write( "Write \"%281-Cos%5E2x%29%281-Cos%5E2x%29\" as \"%281-Cos%5E2x%29%5E2\"\r\n" );
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document.write( "\"Sin%28x%29%281-Cos%5E2x%29%5E2+=+Sin%5E5x\"\r\n" );
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document.write( "Use the identity \"Sin%5E2alpha%2BCos%5E2alpha=1\" as \"1-Cos%5E2alpha=Sin%5E2alpha\"\r\n" );
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document.write( "\"Sin%28x%29%28Sin%5E2x%29%5E2+=+Sin%5E5x\"\r\n" );
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document.write( "\"Sin%28x%29Sin%5E4x+=+Sin%5E5x\"\r\n" );
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document.write( "\"Sin%5E5x+=+Sin%5E5x\"\r\n" );
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document.write( "Edwin
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