2cos(x+пи/3)=-корень из 3

Question

2cos(x+пи/3)=-корень из 3

Answer 1

Cos(x+π/3)=-√3/2
x+π/3=+-5π/6+2πn
x=-5π/6-π/3+2πn=-7π/6+2ππn,n∈Z
x=5π/6-π/3+2πk=π/2+2πk,k∈Z