Question

tg x>(√3/3)

ctg x<(-1)

cos≥(√2/2)

sinx≤(-√3/2)
Помогите пожалуйста

Answer 1

1)  tgx>√3/3
 π/6+πn<x<π/2+πn,n∈z
2)ctgx<-1
3π/4+πn<x<π+πn,n∈z
3) cosx≥√2/2
  -π/4+2πn≤x≤π/4+2πn,n∈z
4) sinx≤-√3/2
  -2π/3+2πn≤x≤-π/3+2πn,n∈z