---
tag: 00Z1YBJJW8
kind: concept
name: Arcsine
msc: [33B10]
sources:
  - url: https://en.wikipedia.org/wiki/Inverse_trigonometric_functions
    locator: Principal values
---

## Summary

The arcsine is the inverse of the sine function restricted to $[-\pi/2, \pi/2]$. It is defined on $[-1, 1]$. The node [[arcsine|0B89D93YA1]] gives the precise definition.