document.write( "Question 599738: show an evaluatuion of sin 120 degrees uaing the trigonometric addidtion formulas \n" ); document.write( "
Algebra.Com's Answer #379054 by stanbon(75887) ![]() You can put this solution on YOUR website! show an evaluatuion of sin 120 degrees uaing the trigonometric addidtion formulas \n" ); document.write( "----- \n" ); document.write( "sin(120) = sin(90+30) = sin(90)cos(30) + cos(90)*sin(30) \n" ); document.write( "------- \n" ); document.write( "= 1*cos(30) + 0*(1/2) \n" ); document.write( "----- \n" ); document.write( "= cos(30) = sqrt(30)/2 \n" ); document.write( "============================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |