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वक्र x=a(theta+sin theta), y=a(1-cos the...

वक्र `x=a(theta+sin theta), y=a(1-cos theta)` का `theta=(pi)/(2)` पर अभिलम्ब की लम्बाई है-

A

`2a`

B

`a/2`

C

`sqrt(2)a`

D

`a/(sqrt(2))`

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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