document.write( "Question 1156911: How do I verify the equation as an identity \r
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Algebra.Com's Answer #779695 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!

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document.write( "Work with the left sides:\r\n" );
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document.write( "\"%28sin%5E4%28x%29-cos%5E4%28x%29%29%2F%28sin%5E%22%22%28x%29cos%5E%22%22%28x%29%29\"\r\n" );
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document.write( "\"matrix%281%2C3%2C+tan%5E%22%22%28x%29+%2C%22%22-%22%22%2C+cot%5E%22%22%28x%29+%29+++\"\r\n" );
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document.write( "Edwin
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