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If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord,

If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to

A.	573 S/R
B.	573 R/S
C.	171.9 S/R
D.	1718.9 R/S
E.	1718.9 S/R.

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