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If x =a sec theta, y =b tan theta then ...

If `x =a sec theta, y =b tan theta ` then `(dy)/(dx) =`

A

`b /a cosec theta`

B

` (-b)/(a) cot theta`

C

` b/a cot h theta `

D

`(-b)/(a) tan h theta `

Text Solution

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The correct Answer is:
A
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