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Cut the Knot!: The Law of Cosines (Cosine Rule)

Curated by ACT

This site from Cut The Knot provides an overview of the law of cosines, complete with an explanation of the law and a proof of the law.

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CCSS: Adaptable
Concepts
pythagorean theorem, law of cosines
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Additional Tags
law cosine, alexander bogomolny, cosine law, cosine rule, cut the knot!: the law of cosines (cosine rule), cut the knot!, euclidean geometry, the law of cosines, proof
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Classroom Considerations
  • Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)