SOHCAHTOA

Pronunciation: /ˈsoʊ.kə.toʊ.ə/ Explain
Abbreviation: SOHCAHTOA

SOHCAHTOA is an mnemonic or acronym used to remember the relationship of trigonometric function and the right triangle. The letters stand for:

• SOH stands for Sine equals Opposite over Hypotenuse;
• CAH stands for Cosine equals Adjacent over Hypotenuse; and
• TOA stands for Tangent equals Opposite over Adjacent.

References

1. McAdams, David E.. All Math Words Dictionary, SOHCAHTOA. 2nd Classroom edition 20150108-4799968. pg 167. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. SOHCAHTOA. 5/7/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/s/sohcahtoa.html.

Image Credits

• All images and manipulatives are by David McAdams unless otherwise stated. All images by David McAdams are Copyright © Life is a Story Problem LLC and are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Revision History

5/7/2019: Changed equations and expressions to new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
12/7/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra app. (McAdams, David E.)
8/7/2018: Changed vocabulary links to WORDLINK format. (McAdams, David E.)
5/5/2011: Initial version. (McAdams, David E.)