If Δ is the angle of deflection of a simple curve of radius R, the distance between the mid-point of the curve and long chord, is-A-B-C-D-.-D-.

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The correct option is  D . As we have radius R so distance from centre to mid point of long chord is R cos &Delta;/2 So, Therefore distance from mid point of the long chord to mid of curve is R R cos &Delta;/2.

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Q1: If Δ is the angle of deflection of a simple curve of radius R, the distance between the mid-point of the curve and long chord, is

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Q1: If Δ is the angle of deflection of a simple curve of radius R, the distance between the mid-point of the curve and long chord, is

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