document.write( "Question 986691: Sin^4x-cos^4x=1-2cos^2x \n" ); document.write( "
Algebra.Com's Answer #607505 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Sin^4x-cos^4x=1-2cos^2x \n" ); document.write( "============================= \n" ); document.write( "You didn't say what you want to do. \n" ); document.write( " |