A few questions I can't figure out the work for and could use a little help

1) Solve the triangle.

B = 73, b = 15, c = 10

2)Two triangles can be formed with the given information. Use the Law of Sines to solve the triangles.

C = 67, a = 21, c = 20

3)Two weather tracking stations are on the equator 165 miles apart. A weather balloon is located on a bearing of N 40E from the western station and on a bearing of N 22E from the eastern station. How far is the balloon from the western station?