A television camera is positioned 1000 m away from the base of a rocket launching pad. The angle of elevation of the camera has to charge in order keep the rocket in sight. Also, the mechanism for focusing the camera has to take into account the increasing distance from the camera to the rising rocket. If we assume the rocket rises vertically and its speed is 200 m/s when its height is 750 m, how fast, to the nearest 100th, is the camera's angle of elevation changing at that moment?