Cos (x/3-П/3)=1/2 срочно

Question

Cos (x/3-П/3)=1/2 срочно

Answer 1

Х/3 - π/3  = +-arcCos1/2 + 2πk, k ∈Z
x/3 = π/3 +-π/3 + 2πk , k ∈Z
x = π +-π + 6πk , k ∈Z