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surveying A surveyor measures the angle of elevation to the top of a building to be 57.8 degree .the surveyor 's measuring instrument is 1.6m above the ground, 18.5m from the base of the building. how tall is the building ?
 Feb 10, 2012

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1.6 + 18.5 * tan(57.8) = 30.98 m (or 31m, if you round it off)
 Feb 10, 2012

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