Math 20-2: Cosine Law

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1. Introduction 00:04
2. Proof of the Cosine Law: 02:32
3. Examples finding a missing side length using the Cosine Law: 08:39
4. Re-arranging the Cosine Law to determine a missing angle: 11:58
5. Example finding a missing angle measure using the Cosine Law: 14:39
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