а)a) X = 5π/6 + 2πn, X = 7π/6 + 2πn
б)b) X = π/4 + 2πn, X = 7π/4 + 2πn
в)c) Корни на заданном промежутке: X = π/6, X = 11π/6
а)
a) X = 5π/6 + 2πn, X = 7π/6 + 2πn
б)
b) X = π/4 + 2πn, X = 7π/4 + 2πn
в)
c) Корни на заданном промежутке: X = π/6, X = 11π/6