Question

Решите неравенства (просто ответы).

Answer 1

1
x∈[-π/3+2πn;-π/6+2πk] U [π/6+2πk[π/3+2πk],k∈z
2
[ctgx≤-√3/3
[ctgx≥√3/3
x∈[-π/3+πk;πk) U (πk;π/3+πk],k∈z