a)sin x = -0.5
x = (-1)ⁿ•(-π/6) + πn
x = (-1)^n+1 • π/6 + πn
б)cos x = 1/3
x = ±arccos(1/3)+2πk
в)tg x = -3
x = -arctg (3) + πn
a)sin x = -0.5
x = (-1)ⁿ•(-π/6) + πn
x = (-1)^n+1 • π/6 + πn
б)cos x = 1/3
x = ±arccos(1/3)+2πk
в)tg x = -3
x = -arctg (3) + πn