Question

The angle of depression from a descending airplane to the control tower below is 60∘.

If the plane is 35,000 feet above the ground, approximately what is the plane's horizontal distance from the control tower?

70,000 ft
20,207 ft
24,749 ft
60,622 ft
tan 60 = 35,000 / h
h = 35,000 / tan 60

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