document.write( "Question 1150576: Establish the identity\r
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\n" ); document.write( "\n" ); document.write( "Cos(a+B)/CosaSinB= Cot B - tan a \n" ); document.write( "
Algebra.Com's Answer #771956 by Edwin McCravy(20067)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"cos%28A%2BB%29%2Fcos%28A%29sin%28B%29=cot%28B%29+-+tan%28A%29\"\r\n" );
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document.write( "Work with the left side\r\n" );
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document.write( "Use formula for cos(A+B)\r\n" );
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document.write( "\"%28cos%28A%29cos%28B%29-sin%28A%29sin%28B%29%29%2F%28cos%28A%29sin%28B%29%29\"\r\n" );
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document.write( "Break into two fractions:\r\n" );
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document.write( "Cancel cos(A)'s in the first fraction and sin(B)'s in second fraction:\r\n" );
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document.write( "\"%28cos%28B%29%29%2F%28sin%28B%29%29-%28sin%28A%29%29%2F%28cos%28A%29%29\"\r\n" );
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document.write( "Use quotient identities for cotangent and tangent:\r\n" );
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document.write( "\"cot%28B%29+-+tan%28A%29\"\r\n" );
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document.write( "Edwin
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