A triangle has sides A, B, and C. If the angle between sides A and B is #(pi)/6#, the angle between sides B and C is #(7pi)/12#, and the length of B is 11, what is the area of the triangle?
Find all 3 sides through the use of law of sines, then use Heron's formula to find the Area.
The sum of angles:
Law of sines
So you can find sides
From Heron's formula: