Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 4 (Q.No. 4)
To set out a parallel from a given inccessible point to a given line AB, the following observations and made
Distance AB and angle PAM = a and angle PBA = b are measured where Mis a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :
Answer: Option
No answer description is available. Let's discuss.
4 comments Page 1 of 1.

Bhavesh said:   8 years ago
How? Please explain.

Prakriti said:   7 years ago
Let PC be the length of perpendicular.

AB = AC + CB = PCcot(180-a) + PCcotb,
Thus, PC = AB/(cotb - cota).

Padmavathi said:   5 years ago
Nice, thanks @Prakriti.

Gajendra Raj Joshi said:   10 months ago
Thanks for explaining @Prakriti.

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