In plane table surveying, the method of 'intersection' is employed to locate:
Choose the correct answer
The instrument station when its position is unknown
Inaccessible points visible from two already-plotted instrument stations
Detail points by measuring distance and direction from a known station
The station position using three known plotted control points
Correct Answer
B. Inaccessible points visible from two already-plotted instrument stations
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Intersection: two rays are drawn from two known plotted stations to an inaccessible point. Their intersection on the paper locates it without measuring distance. Radiation = known station + distance + direction. Resection = finding unknown station from known plotted points.
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