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15 January, 02:17

To approach a runway, a pilot of a small plane must begin a 10 degrees descent starting from a height of 1983 feet. To the nearest tenth of a mile, how many miles from the runway is the airplane at the start of it's descent?

Trigonometry

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  1. 15 January, 02:46
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    Tan (10 degrees) = 1983 / distance

    distance = 1983 / tan (10 degrees)

    distance = 1983 / 0.17633

    distance = 11,246 feet

    11,246 / 5,280 = 2.13 miles
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