An Airplane Is Flying Horizontally at an Altitude Of $5 \mathrm{~km}$

Short Answer

An airplane is flying horizontally at an altitude of $5 \mathrm{~km}$ and with speed of $600 \mathrm{~km} / \mathrm{h}$ . It passes directly over an observer on the ground. Determine how fast the angle between the airplane and the observer is increasing, in rads/h, 1 minute after the airplane passed the observer.