Instructional Video

Khan Academy: Solving for an Angle With the Law of Cosines

Curated by ACT

Sal is given a triangle with all side lengths but no angle measure, and he finds one of the angle measures using the law of cosines.

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CCSS: Adaptable
Classroom Considerations
  • Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional
Common Core