Корень 2 cos(2x-pi/3)=1

Question

Корень 2 cos(2x-pi/3)=1

Answer 1

Cos(2x-π/3)=1/2       2x-π/3=+-π/3+2πn
2x=+-π/3+π/3+2πn
x=+-π/6+π/6+πn      n∈Z