Section 1.6 Law of Cosines
Section 1.6 Law of Cosines. Objectives: 1. To prove the law of cosines. 2. To solve triangles using the law of cosines. Law of Cosines For any triangle ABC, where side lengths opposite angles A, B, and C are a, b, and c respectively, then a 2 = b 2 + c 2 – 2bc cos A.
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