Angle of elevation? A jet flies horizontally 500 ft directly above a spectator at an air show at 450 mi/hr. Determine how quickly the angle of elevation (between the ground and the line from the spectator to the jet) is changing 2 s later.

Solution Step 1: Given a jet flies horizontally 500 ft directly above a spectator at an air show at 450 mi/hr. Let x be the distance the jet has flown since it went over the spectator to the jet. And let be the angle of elevation between the ground and the line from the spectator to the jet Step 2: From the given we can draw the figure as like as below