finding angles in a triangle

[Guest]

One side of triangelar lot is 100ft and the angle opposite this side it 55 degrees. another angle is 63 degrees. how much fence will be need to close in the lot. I am having trouble figuring out which angle goes where and if use Cos or Tan

 

[TchrWill]

With the given information you can use the Law of Sines to find the side opposite the 63º angle, x/sin63 = 100/sin55

Since the third angle is 62º, you now can find the side opposite this angle.

You now have the three sides and the perimeter.