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Proof of the Law of Cosines, Trig Identities and Examples, Trigonometry Instructional VideoProof of the Law of Cosines, Trig Identities and Examples, Trigonometry Instructional Video
Publisher
Khan Academy
Resource Details
Curator Rating
Educator Rating
Not yet Rated
Grade
11th - Higher Ed
Subjects
Math
2 more...
Resource Type
Instructional Videos
Media Length
9:27
Audiences
For Teacher Use
1 more...
Duration
10 mins
Instructional Strategies
Flipped Classroom
1 more...
Accessibility
Closed Captions
1 more...
Year
2007
Usage Permissions
Creative Commons
BY-NC-SA: 3.0
cc
Instructional Video

Proof of the Law of Cosines, Trig Identities and Examples, Trigonometry

Curated and Reviewed by Lesson Planet
This Proof of the Law of Cosines, Trig Identities and Examples, Trigonometry instructional video also includes:
  • Proof of the Law of Cosines (HTML version from khanacademy.org)
  • Join to access all included materials

Sal derives the Law of Cosines using a method similar to the wayward ship captain word problem he solves in another video. This video provides a good review of using the SOH-CAH-TOA model, the Pythagorean Theorem, some basic trig identities, and algebra.

19 Views 12 Downloads

Concepts

law of cosines, Trigonometry

Additional Tags

law of cosines, Trigonometry, law of cos, finding sides or angles of any triangle, math

Classroom Considerations

  • This video is hosted on YouTube

View 13,803 other resources for 11th - Higher Ed Grade Math

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