# arcus tangent

> inverse of the tangent function

**Wikidata**: [Q2257242](https://www.wikidata.org/wiki/Q2257242)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Arctangent)  
**Source**: https://4ort.xyz/entity/arcus-tangent


## References

1. ISO 80000-2:2019 Quantities and units — Part 2: Mathematics