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Inverse Trig Calculator

Calculate arcsin (sin⁻¹), arccos (cos⁻¹), or arctan (tan⁻¹) of any value and get the angle in both degrees and radians. The calculator automatically recognizes standard unit-circle values — entering 0.5 for sin⁻¹ returns exactly 30° = π/6, not a decimal approximation. Domain restrictions are enforced: sin⁻¹ and cos⁻¹ require inputs between −1 and 1, while tan⁻¹ accepts any real number. Each result includes step-by-step work showing the domain, range, and a verification step.

Inverse Trig Ranges

sin⁡−1:[−1,1]→[−π2,π2]\sin^{-1}: [-1,1] \to \left[-\frac{\pi}{2}, \frac{\pi}{2}\right]cos⁡−1:[−1,1]→[0,π]\cos^{-1}: [-1,1] \to [0, \pi]tan⁡−1:R→(−π2,π2)\tan^{-1}: \mathbb{R} \to \left(-\frac{\pi}{2}, \frac{\pi}{2}\right)

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