Chapter P.3, Problem 49E

For Exercises 49 to 50, use the following information. Relative to its point departure or some other point of reference, the angle that is used to locate the position of a ship or airplane is called its bearing. The bearing may also be used to describe the direction in which the airplane or ship is moving. By using an angle between $0°$ and $90°$, a bearing is measured from the North-South line toward the East or West. In the diagram, airplane $A$ (which is $250$ miles from Chicago’s $O$’ Hare airport’s control tower) has a bearing of S $53°$ W.

Find the bearing of airplane $B$ relative to the control tower.