# Inverse Trigonometric Functions Calculator

> Calculate arcsine, arccosine, or arctangent in degrees and radians.

Page: https://askcalculators.com/calculator/inverse-trigonometric-functions-calculator/
Definition: https://askcalculators.com/calculator/inverse-trigonometric-functions-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/inverse-trigonometric-functions-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/inverse-trigonometric-functions-calculator/?function=asin&value=0.5

## Inputs
- function: Function; type=select; required; default=asin; values=asin|acos|atan
- value: Input value; type=number; required; default=0.5

## Outputs
- degrees: Angle in degrees; format=number; primary
- radians: Angle in radians; format=number
- principalRange: Principal range; format=text

## Formula
θ = sin⁻¹(x), cos⁻¹(x), or tan⁻¹(x)

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.