Please help me solve this problem

If chord ab is congruent to chord cd, then what must be true about ef and eg?

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 .

If there are 3.281 feet in 1 meter, how many inches are in one centimeter