# Arccotangent

Pronunciation: /ɑɹk.koʊˈtæn.dʒənt/ Explain
Abbreviations: acot, arccot

 Figure 1: Arccotangent

The arccotangent function returns an angle whose cotangent is a particular value. The arccotangent is a trigonometric function. The arccotangent is the functional inverse of the cotangent function. If adjacent/opposite = cot(θ) then cot-1(adjacent/opposite) = θ. Arccotangent is written arccot or cot-1.

Definition: y = cot-1 x if and only if x = cot y.

### References

1. McAdams, David E.. All Math Words Dictionary, arccotangent. 2nd Classroom edition 20150108-4799968. pg 18. Life is a Story Problem LLC. January 8, 2015. Buy the book

• McAdams, David E.. Cotangent. allmathwords.org. Life is a Story Problem LLC. 6/19/2018. http://www.allmathwords.org/c/cotangent.html.

McAdams, David E. Arccotangent. 4/12/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/a/arccotangent.html.

### Revision History

4/12/2019: Changed equations and expressions to new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)