Question

An airplane is flying 4,200 feet above the ground at an angle of depression of 7.8°. How far must the plane fly in order to land?

Answer 1

a.

4,239 feet
b.

30,947 feet
c.

30,661 feet
d.

32,583 feet

Answer 2

adjacent

Answer 3

secant?

Answer 4

Sorry. Let me start over.

Answer 5

The angle of depression is measured down from the horizontal as in the picture above.

Answer 6

Okay

Answer 7

First, we neeed to find the measure of the angle labeled a.
We know that a + 7.8 = 90

Answer 8

That means a = 90 - 7.8 = 82.2