Найпростіші тригонометричні нерівності

[π/6+πk; 5π/6+πk), k∊Z

[−π/6+πk; π/2+πk), k∊Z

[−π/6+πk; 5π/6+πk), k∊Z

[π/6+πk; π/2+πk), k∊Z

[−5π/6+πk; 5π/6+πk), k∊Z

[−5π/6+πk; −π/6+πk), k∊Z

[π/2+πk; 5π/6+πk), k∊Z

[−π/2+πk; 5π/6+πk), k∊Z

 [π/6+πk; +∞), k∊Z

 [πk; π/4+πk], k∊Z

 [π/4+πk; 3π/4+πk], k∊Z

 [−π/4+πk; 3π/4+πk], k∊Z

 [−π/4+πk; π/4+πk], k∊Z

 [−π/4+2πk; π/2+2πk], k∊Z

 [−π/2+πk; π/2+πk], k∊Z

 [π/4+2πk; 3π/4+2πk], k∊Z

  [−π/9+4πk/3; π/9+4πk/3], k∊Z

 [−π/9+4πk/3; π/3+4πk/3], k∊Z

 [−π/3+4πk/3; 2π/3+4πk/3], k∊Z

 [−π/3+4πk/3; π/9+4πk/3], k∊Z

  [−π/9+3πk; π/9+3πk], k∊Z

  [−π/9+3πk; π/3+3πk], k∊Z

 [−π/3+3πk; 2π/3+3πk], k∊Z

 [−π/3+3πk; π/9+3πk], k∊Z