The perpendicular offset from the tan-get to the central point of the

1.	The perpendicular offset from the tan-get to the central point of the circular curve, is
A.	R sin θ/2
B.	R cos θ/2
C.	R (1 - cos θ/2)
D.	R (1 - sin θ/2)
Answer» D. R (1 - sin θ/2)

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