Question

An airplane is flying at 4000 feet above the ground. If the angle of depression from the airplane to the beginning of the runway is 5.4°, what is the horizontal distance to the nearest tenth of a mile of the airplane to the beginning of the runway?

Answer 1

42315.6

Explanation:

Let the horizontal distance be x.

`\tan 5.4^(\circ)=(4000)/(x) \\ \\ x=(4000)/(\tan 5.4^(\circ)) \\ \\ x \approx 42315.6`