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Mathematics 7 Online
OpenStudy (anonymous):

Assume that the faces at Mount Rushmore are directly above the base of the mountain. To measure the height of one of the faces, two sightings 245 metres from the base of the mountain are taken. If the angle of elevation to the bottom of the face is measured as 32° and the angle of elevation to the top is measured as 35°, what is the measurement of the height of this face? Answer to the nearest 0.1 metre

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