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If x =a cos theta , y =b sin theta then ...

If `x =a cos theta , y =b sin theta` then `(dy)/(dx) =`

A

`b/acosec theta `

B

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

C

`b/a cot h theta `

D

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

Text Solution

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The correct Answer is:
B
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