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A surveyor stand 27 feet from the base of a building, measure the angle of elevation...

A surveyor stand 27 feet from the base of a building, measure the angle of elevation to the top of the building and it is 55 degree. How accurately you must measure the angle so that the percentage of error in estimating the height of the building is less than 2%?

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Answer #1

The percentage error in angle should less than 0.979%.

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