Law of Cosines
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Law of Cosines


Law of Cosines

Logo for Law of Cosines
The Law of Cosines describes fundamental properties of triangles. Use this Formula Solver! Series program to learn how it works (and to check your homework answers, too!)
Material Type: Tutorial
Technical Format: Flash
Date Added to MERLOT: November 27, 2007
Date Modified in MERLOT: May 27, 2010
Submitter: Rudy Lopes


  • Reviewed by members of Editorial board for inclusion in MERLOT.
    Editor Review (not reviewed)
  • User review 4 average rating
  • User Rating: 4 user rating
  • Discussion (1 Comment)
  • Learning Exercises (none)
  • Personal Collections (2)
  • Accessibility Info (none)


Primary Audience: High School, College General Ed, College Lower Division
Mobile Compatibility: Not specified at this time
Language: English
Cost Involved: no
Source Code Available: no
Accessiblity Information Available: no
Creative Commons: unsure


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Avatar for Kaitlyn Fiechtner
5 years ago

Kaitlyn Fiechtner (Student)

Good explanation of how to use law of cosines.

Technical Remarks:

I'm not sure if it was simply my computer, but I couldn't plug in my own values to get an answer. Is there a "calculate" button or something else I missed?