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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°)
Use decimal dot and comma to group digits.
Angle converter: degrees and radians