document.write( "Question 305799: VERSIN(A+B)*VERSIN(A-B) \n" ); document.write( "
Algebra.Com's Answer #218935 by Edwin McCravy(20086)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "VERSIN(A+B)*VERSIN(A-B)\r\n" );
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document.write( "[1-cos(A+B)][1-cos(A-B)]\r\n" );
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document.write( "1-cos(A-B)-cos(A+B)+cos(A+B)cos(A-B)\r\n" );
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document.write( "1-(cosAcosB+sinAsinB)-(cosAcosB-sinAsinB)+(cosAcosB-sinAsinB)(cosAcosB+sinAsinB)\r\n" );
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document.write( "1-cosAcosB-sinAsinB-cosAcosB+sinAsinB+(cosAcosB-sinAsinB)(cosAcosB+sinAsinB)\r\n" );
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document.write( "1-2cosAcosB+(cos²Acos²B-sin²Asin²B)\r\n" );
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document.write( "1-2cosAcosB+cos²Acos²B-sin²Asin²B\r\n" );
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document.write( "1-2cosAcosB+cos²Acos²B-(1-cos²A)(1-cos²B)\r\n" );
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document.write( "1-2cosAcosB+cos²Acos²B-(1-cos²B-cos²A+cos²Acos²B)\r\n" );
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document.write( "1-2cosAcosB+cos²Acos²B-1+cos²B+cos²A-cos²Acos²B\r\n" );
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document.write( "-2cosAcosB+cos²B+cos²A\r\n" );
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document.write( "cos²A-2cosAcosB+cos²B\r\n" );
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document.write( "(cosA-cosB)²\r\n" );
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