nhytgbvfeco2never wants to reply, unless he is given a cookie But I am interested (question in post 20).

Anyway, here is a new problem:

You are fighting in the Trojan war, as one of the Greeks. High above you, Aphrodite -who famously sided with the Trojans, due to the apple - appears. Diomedes is planning to strike her, but he is on the opposite side to you (=Aphrodite is between you, high up). Your angle of elevation (the angle in which you raise your head to see Aphrodite) is 20 degrees. Diomedes' angle is 25 degrees. You do know that the distance between you and Diomedes is 500 meters, so the question is: how high above you is Aphrodite?