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23. An engineer-tourist in Dubai finds the angle of elevation (angle from the horizontal) of the top of the spire on Burj Dubai from where

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23. An engineer-tourist in Dubai finds the angle of elevation (angle from the horizontal) of the top of the spire on Burj Dubai from where he's standing to be 580. He then walks 57 meters closer to Burj Dubai and finds the angle of elevation of the top of the spire to be 61". To the nearest meter, how tall is Burj Dubai? (Lesson 2-9)

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