---
tag: 0CE768XNVP
kind: concept
name: Arctangent
msc: [33B10]
sources:
  - url: https://en.wikipedia.org/wiki/Inverse_trigonometric_functions
    locator: Principal values
---

## Summary

The arctangent is the inverse of the tangent function restricted to $(-\pi/2, \pi/2)$. It is defined on all of $\mathbb{R}$ and it is bounded. The node [[arctangent|065XW2V6C3]] gives the precise definition.