# A triangle has sides A, B, and C. If the angle between sides A and B is #(pi)/12#, the angle between sides B and C is #(5pi)/6#, and the length of side B is 9, what is the area of the triangle?

##### 1 Answer

Dec 15, 2015

#### Explanation:

We use ABC for points; and a,b,c for opposite sides.

angle between a and b =

angle between b and c =

Therefore,

Let

We want