An Airplane Flying at an Altitude of 7200 Feet Sights $18 ^ { \circ }$

An airplane flying at an altitude of 7200 feet sights the angle of depression to a control tower to be $18 ^ { \circ }$ . Find the horizontal distance the plane is from the control tower.
(Disregard the height of the tower and round your answer to the nearest foot.)
A) $\approx 23,301 \mathrm { ft }$
B) $\approx 7,570 \mathrm { ft }$
C) $\approx 2,339 \mathrm { ft }$
D) $\approx 22,159 \mathrm { ft }$