You claim to have a magic coin that will land on heads whenever you want. your friend dares you to prove it by tossing 4 heads in a row. assuming the coin is fair, what is the probability that your magic will fail?

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 .