Please answer this correctly

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Use circumcenter theorem to solve for the given values

Which equation can be solved to find x the measure of jk in the apex