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To approach a runway a plane must begin a 7° decent starting from a height of 5 mile above the ground. To the nearest mile, how many miles from the runway is the airplane at the start of this approach?

1 Answer

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tan 7 degrees = 5 miles / distance
distance = 5 miles / tan 7 degrees
distance = 5 miles / .12278
distance = 40.7 miles

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