Тригонометрическое уравнение
Tg (x - π/3) = √3/3 x - π/3 = arc tg √3/3 + πn, n ∈ Z x - π/3 = π/6 + πn, n ∈ Z x = π/6 + π/3 + πn, n ∈ Z x = π/2 + πn, n ∈ Z