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If x=sect+tant and y=sect - tant, where ...

If `x=sect+tant and y=sect - tant`, where t is a parameter, then the value of `(dy)/(dx)` when `x=(1)/(sqrt3)` is

A

0

B

`-3`

C

`sqrt3`

D

`(1)/(sqrt3)`

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The correct Answer is:
B
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