Math

An airplane pilot over the Pacific sights an atoll at an angle of depression of 7°. At this time, the horizontal distance from the airplane to the atoll is 3,729 meters. What is the height of the plane to the nearest meter?

458 meters
454 meters
3,667 meters
3,701 meters

So I have,

tan(7degree) = x/3729 = 0.1228

But how would I get X?

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  1. Multiply both sides by 3729, yielding 3729tan(7)

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  2. 456.635, so would it be A? Since it is the closest?

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  3. did you ever get the answer.?

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  4. 3729tan(7) = 457.8 so the answer would be A, 458 meters.

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