To Determine the Distance Between Two Aircraft,a Tracking Station Continuously

Multiple Choice

To determine the distance between two aircraft,a tracking station continuously determines the distance to each aircraft and the angle between them (see figure) .Determine the distance a between the planes when A = 52° miles,b = 22 miles,and c = 19 miles.​ ​

A) 18.2 mi
B) 20.2 mi
C) 36.9 mi
D) 24.2 mi
E) 21.2 mi