document.write( "Question 305188: how do i find the exact value of cos 810 degrees? \n" ); document.write( "
Algebra.Com's Answer #218504 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Subtract 360º repeatedly until the angle is less than 360 \n" ); document.write( "810 - 360 = 450 \n" ); document.write( "450 - 360 = 90 \n" ); document.write( "cos(90) = 0 \n" ); document.write( "---------------- \n" ); document.write( " \n" ); document.write( " |