Q Questions New member Mar 28, 2010 #1 solve the trigonometric functions: 2cos3x=-1 cos^2x+sinx=1 cos(x+pi/2)-cos(x-pi/2)=1 please help!! very important ty
solve the trigonometric functions: 2cos3x=-1 cos^2x+sinx=1 cos(x+pi/2)-cos(x-pi/2)=1 please help!! very important ty
