document.write( "Question 1161749: is cos3pi positive negative or zero \n" ); document.write( "
Algebra.Com's Answer #785390 by greenestamps(13203)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "3pi is coterminal with 3pi-2pi = pi \n" ); document.write( "pi radians is a half circle; on the unit circle you are at (-1,0). \n" ); document.write( "Cosine is the x value, which is -1. \n" ); document.write( "ANSWER: negative \n" ); document.write( " |