An Airplane,flying at an Altitude of 8 Miles,is on a Flight

Multiple Choice

An airplane,flying at an altitude of 8 miles,is on a flight path that passes directly over an observer (see figure) .If $\theta$ is the angle of elevation from the observer to the plane,find the distance from the observer to the plane when $\theta = 60$ °.(Round your answers to two decimal place. ) ​ ​

A) 11.24 mi
B) 10.24 mi
C) 9.24 mi
D) 12.24 mi
E) 13.24 mi