### Home > A2C > Chapter 13 > Lesson 13.2.2 > Problem 13-120

13-120.

If the side lengths of are

*,*

*, and*

*, calculate the measure of the largest angle.*

Start by drawing a triangle and labeling the sides and angles.

Use the Law of Cosines, then Law of Sines to calculate the measures of the angles.

Which angle is the largest?