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What you'll learn
- State the Law of Cosines: c^2 = a^2 + b^2 - 2ab*cos(C)
- Apply the Law of Cosines to find a missing side when given two sides and the included angle (SAS)
- Apply the Law of Cosines to find a missing angle when given all three sides (SSS)
- Explain why the Pythagorean theorem is a special case of the Law of Cosines when C = 90 degrees
Prerequisites
Slides
Interactive presentations perfect for visual learners • Interactive presentation
Slide Video
Watch narrated slides play like a video lesson • Narrated slide playback
Exercises
Practice problems to build fluency and understanding • 1 exercises