document.write( "Question 80408: The expression (1+cosx)(1-cosx)is equivalent to \n" ); document.write( "
Algebra.Com's Answer #57687 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! =1-cos^2x = sin^2x \n" ); document.write( "========= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |