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21-12-2018
Mathematics

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An airplane is at an elevation of 35,000 ft when it its approach to an airport. Its angle of descent is 6°.

What is the distance between the airport and the point on the ground directly below the airplane?

What is the approximate air distance between the plane and the airport?

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RyanLeung RyanLeung

02-01-2019

Let the ground distance be x
tan6=35000÷x
x=333000 ft (corr. to 3 sig. fig.)

Let the air distance be y
sin6=35000÷y
y=335000 ft (corr. to 3 sig.fig.)

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