# Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 8 (Q.No. 2)

2.

If Δ is the angle of deflection of a simple curve of radius

*R*, the length of its long chord, isDiscussion:

7 comments Page 1 of 1.
Sagar naik said:
8 years ago

Why not option A?

Abhishek said:
7 years ago

Please explain. Why not option A is correct?

Abhishek singh said:
7 years ago

It's option A.

Rohit said:
7 years ago

Yes, Options D is right.

Dhaval Vaghasiya said:
6 years ago

RcosΔ/2 = length between the midpoint of long chord and center of the curve.

So, option D is right.

So, option D is right.

Dave said:
6 years ago

Option D is correct. Considering the rigth angle on the center of the cord, then apply trigonometric functions.

Jinish said:
4 years ago

Length of the chord - diameter multiply by the half degree of the sine.

= D x sin angle/2

= 2R x sine θ/2

= D x sin angle/2

= 2R x sine θ/2

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