The length of the normal at t on the cur...

The length of the normal at t on the curve `x=a(t+sint), y=a(1-cos t),` is

A

a sin t

B

`2a sin^3 (t//2) sec (t//2)`

C

`2a sin(t//2) tan(t//2)`

D

`2a sin(t//2)`

Verified by Experts

The correct Answer is:

C

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