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4 September, 17:10

An airplane is flying at 4000 feet above the ground. If the angle of depression from the airplane to the beginning of the runway is 5.4°, what is the horizontal distance to the nearest tenth of a mile of the airplane to the beginning of the runway?

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  1. 4 September, 17:17
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    Tan 5.4 = 4000/x

    x = 4000/tan 5.4

    x = 42,316 ft

    x = 42,316/5280 mi = 8.0 miles

    Answer: 8.0 miles
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