A surveyor measures the angle of elevation to the top of a building to be 70 degrees. The surveyor then walks 50 ft farther from the base of the tower and measures the angle of elevation to be 50 degrees. The surveyor's angle-measuring device 5.5 ft from the ground. How tall is the building, to the nearest foot? I don't know how to start this problem.

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radar · Answer

Start by visualizing the problem......a diagram is an excellent method.|dw:1424910253873:dw|