Geometry

Question Analysis

The problem requires using the Law of Cosines to find the length of side  in , given two side lengths (, ) and the included angle ().

 

Key Concept Explanation

The Law of Cosines states that for a triangle with sides , ,  and the angle  opposite side , . Here, to find , we use .

 

Step - by - Step Solution

1. Identify values: Let , ,

Click "Show Answer" to reveal the answer and analysis