Ẹ̀rọ ìṣirò àwọn iṣẹ́ trigonomẹ́trì

tan(θ) = sin(θ) / cos(θ); cos(θ) = 0 ⇒ tan(θ) ∄

−360000 ≤ θ ≤ 360000

−1 ≤ x ≤ 1: arcsin(x), arccos(x); −10⁶ ≤ x ≤ 10⁶: arctan(x)

arcsin ∈ [−90°, 90°]; arccos ∈ [0°, 180°]; arctan ∈ (−90°, 90°)