Answer the following question below: Please also make sure that your hand writing is clear and readable, thank you!

l. TELEVISING A ROCKET LAUNCHA major network is televising the launching of a rocket. A camera tracking the liftoff of the rocket is located at point A, as shown in the accompanying gure, where '1' (phi) denotes the angle of elevation of the camera at A. How fast is '1' changing at the instant when the rocket is at a distance of 13,000 ft from the camera and this distance is increasing at the rate of 480 ft/sec