distances, surveyors used a subtense bar to measure a distance x that is not directly measurable. A subtense bar is a bar of known length h with marks or “targets” at either end. The surveyor measures the angle
88. A surveyor uses a subtense bar to find the distance across a canyon. If the angle of sight between the bottom and top marks on a 2-m bar is 24’33”, approximate the distance across the river between the surveyor and the bar. Round to the nearest meter.
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