Civil Engineering - Surveying - Discussion

2. 

If Δ is the angle of deflection of a simple curve of radius R, the length of its long chord, is

[A]. R cos
[B]. 2R cos
[C]. R sin
[D]. 2R sin .

Answer: Option D

Explanation:

No answer description available for this question.

Sagar Naik said: (Apr 28, 2016)  
Why not option A?

Abhishek Singh said: (Apr 2, 2017)  
It's option A.

Abhishek said: (Apr 2, 2017)  
Please explain. Why not option A is correct?

Rohit said: (Aug 31, 2017)  
Yes, Options D is right.

Dhaval Vaghasiya said: (Jan 4, 2018)  
RcosΔ/2 = length between the midpoint of long chord and center of the curve.

So, option D is right.

Dave said: (Jun 4, 2018)  
Option D is correct. Considering the rigth angle on the center of the cord, then apply trigonometric functions.

Jinish said: (Dec 21, 2019)  
Length of the chord - diameter multiply by the half degree of the sine.
= D x sin angle/2
= 2R x sine θ/2

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