document.write( "Question 695548: How do I find the opposite sine of -pi divided by 3 without using a calculator or the opposite sine of the positive sine of 2pi divided by 3? \n" ); document.write( "
Algebra.Com's Answer #428644 by stanbon(75887) ![]() You can put this solution on YOUR website! How do I find the opposite sine of -pi divided by 3 without using a calculator or the opposite sine of the positive sine of 2pi divided by 3? \n" ); document.write( "---------- \n" ); document.write( "find the opposite sine of -pi divided by 3 without using a calculator \n" ); document.write( "sin(-pi/3) = -sin(pi/3) = -sin(60 degrees) = -1/sqrt(3) \n" ); document.write( "---- \n" ); document.write( "sin((2/3)pi) = sin(120 degrees) = sin(30) = 1/2 \n" ); document.write( "--------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "===================== \n" ); document.write( " |