(1-2 sinX)*(2 cos^2X-1)=0

Question

(1-2 sinX)*(2 cos^2X-1)=0

Answer 1

sinx=1/2

x=(-1)^n*pi/6+pi/n

 

 

cos2x=1/2

2x=+-pi/3+2pi/n

x=+-pi/6+pi/n