If x= a(cos t + tsin t), y= a(sin t- t c...

If `x= a(cos t + tsin t), y= a(sin t- t cos t)`, then `dy/dx` .............. A) cot t B) -tan t C) `sqrt (tan t)` D) tan t

A

`- tan t`

B

`- cos t`

C

tan t

D

cos t

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The correct Answer is:

B

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