document.write( "Question 921419: prove that :
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document.write( "2 (cos^2)A+ cos A - 1 = 0 \n" );
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Algebra.Com's Answer #558987 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! It doesn't \n" ); document.write( " \n" ); document.write( " |