$K$ stands for known angle in the picture.
I have two triangles, I am given two angles of the bottom triangle, and the distance between them. With that I can figure out the rest of the information about the bottom triangle, and one of the angles of the top triangle. I am also given the length of one side of the top triangle. I need to find the rest of the angles and sides of the top triangle. Is it even possible to solve for this with the information available, or am I just wasting my time?