document.write( "Question 1075809: cos^2 π/8 + cos^2 3π/8 +cos^2 5π/8 + cos^2 7π/8 \n" ); document.write( "
Algebra.Com's Answer #690452 by ikleyn(52799)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "1.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |