law of cosines: References & Edit History

Article Contributors

Primary Contributors

  • Anoushka Pant
    Anoushka Pant holds a degree in elementary education, with a focus on mathematics, education, and psychology, from Miranda House, University of Delhi.
  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Modified link of Web site: Mathematics LibreTexts - The Law of Cosines. Oct 09, 2026
Add new Web site: Khan Academy - Proof of the law of cosines. Apr 30, 2026
Add new Web site: University of Toronto - Department of Mathematics - The Law of Cosines (PDF). Jul 03, 2025
Article revised. May 28, 2025
Add new Web site: Academia - Geometry of the Law of Cosines (PDF). May 04, 2025
Add new Web site: Alamo Colleges District - Law of Cosines. Nov 27, 2024
Add new Web site: Khan Academy - Solving for a side with the law of cosines. Oct 19, 2024
Add new Web site: Andrews University - Law of Cosines. Sep 04, 2024
Add new Web site: University of Utah - Department of Mathematics - Law of Cosines. Mar 22, 2024
Add new Web site: OpenStax - Precalculus 2e - Non-right Triangles: Law of Cosines. Jan 12, 2024
Add new Web site: LOUIS Pressbooks - Trigonometry - The Law of Cosines. Nov 30, 2023
Add new Web site: Math is Fun Advanced - The Law of Cosines. Jun 02, 2023
Add new Web site: Story of Mathematics - The Cosine Rule οΏ½ Explanation & Examples. Apr 17, 2023
Add new Web site: Mathematics LibreTexts - The Law of Cosines. Oct 10, 2022
New article added. Mar 17, 2009
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