This document discusses solving triangles using the Law of Cosines. It provides two examples to solve: a triangle with side lengths b = 5, c = 8 and angle A = 35 degrees; and a triangle with side lengths a = 6, b = 8, and c = 5. The document aims to teach the reader how to use the Law of Cosines to find missing side lengths or angles of a triangle when some combination of sides and angles are known.

1. Section 8.3 The Law of Cosines

5. OBJECTIVE 1

6. Solve the triangle: b = 5 , c = 8, A = 35°

7. OBJECTIVE 2

8. Solve the triangle: a = 6 , b = 8, c = 5

9. OBJECTIVE 3