Atelevision camera at ground level is filming the lift-off of a space shuttle at a point 750 meters from the launch pad. let θ be the angle of elevation of the shuttle and let s be the distance between the camera and the shuttle (see figure). write θ as a function of s for the period of time when the shuttle is moving vertically. differentiate the result to find dθ / dt in terms of s and ds / dt.