document.write( "Question 665901: cos(pi/10) = cos (-pi/10) How do i show this to be true. Explain \n" ); document.write( "
Algebra.Com's Answer #414164 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! cos(pi/10) = cos (-pi/10) How do i show this to be true. Explain \n" ); document.write( "----------- \n" ); document.write( "Use the unit circle, or plot the terminal points on the x-y plane. \n" ); document.write( " |