If R is the radius of the circular curve and ϕ is the deflection angl – McqOptions

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1.	If R is the radius of the circular curve and ϕ is the deflection angle, then tangent length of the curve is given by:
A.	R tan ϕ/2
B.	R tan ϕ
C.	R tan ϕ/4
D.	R tan ϕ/8
Answer» B. R tan ϕ

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