# A triangle has sides A, B, and C. Sides A and B are of lengths #2# and #7#, respectively, and the angle between A and B is #(5pi)/12 #. What is the length of side C?

##### 1 Answer

Apr 6, 2017

#### Explanation:

The length of

The length of

The angle between

Now to the Law of Cosines

We will simply substitute the values we have and find the length of