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Mathematics 18 Online
OpenStudy (anonymous):

A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 31 ^\circ. From a point 1000 feet closer to the mountain along the plain, they find that the angle of elevation is 34 ^\circ. How high (in feet) is the mountain?

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