### Home > GC > Chapter 6 > Lesson 6.2.5 > Problem 6-83

6-83.

**Examine** the triangles below. For each, solve for and name which

**tool**you use. Show all work.

What trig ratio can you use to solve for

?, tangent

Find the measure of the unknown angle. Now what law can you use to solve for

?

Use the Law of Cosines to solve for

., Law of Cosines