If Δ is the angle of deflection of a simple curve of radius R, the le – McqOptions

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1.	If Δ is the angle of deflection of a simple curve of radius R, the length of its long chord, is
A.	R cosΔ/2
B.	2R cosΔ/2
C.	R sinΔ/2
D.	2R sinΔ/2
Answer» E.

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