### Home > PC > Chapter 3 > Lesson 3.2.2 > Problem 3-77

3-77.

Find the area of the triangle shown below.

Use the Law of Cosines to determine the length of one of the missing sides.

where is the angle between sides

*and*

3-77.

Find the area of the triangle shown below.

Use the Law of Cosines to determine the length of one of the missing sides.

where is the angle between sides