# A triangle has sides A, B, and C. Sides A and B are of lengths #5# and #2#, respectively, and the angle between A and B is #(11pi)/12 #. What is the length of side C?

##### 1 Answer

Dec 19, 2015

Use the Law of Cosines.

The angle between sides

Plug in what you know.

Thus, this can be simplified and plugged into a calculator (remember to be in radian mode.