2cos x/3 - корень из 3=0

Question

2cos x/3 - корень из 3=0

Answer 1

2cos(x/3) - √3 = 0 ;
cos(x/3) = √3/2 ;
x/3 = (+/-) π/6 +2π*k , k ∈Z ;
x = (+/-)π/2 +6π*k , k ∈Z .