---
tag: 05WEYX99X4
kind: concept
name: Inverse trigonometric functions
msc: [33B10]
sources:
  - url: https://en.wikipedia.org/wiki/Inverse_trigonometric_functions
    locator: lead section
same_as:
  wikidata: Q674533
  wikipedia: Inverse trigonometric functions
---

## Summary

The inverse trigonometric functions recover an angle from its sine, cosine or tangent. They are the inverses of the trigonometric functions restricted to standard intervals. The node [[inverse trigonometric functions|02HTDK1FBD]] gives the precise definition.