document.write( "Question 1041998: proove that
\n" ); document.write( "Cot(45+A)cot(45-A) =1
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Algebra.Com's Answer #656900 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "===> \"cot%2845%2BA%29%2Acot%2845-A%29+=+1\".
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