To set a right angle on a survey line, the instrument is held on
- AOption (a)
The tangent of the line with its centre at the mid-distance and parallel to the right angle.
- BOption (b)
The line with its centre on the point at which perpendicular is erected.
- COption (c)
The main station of survey line and away from the point at an intervisible distance.
- DOption (d)
The nearest tie station and placed at an intervisible distance.
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Correct answer
The tangent of the line with its centre at the mid-distance and parallel to the right angle.