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यदि x=a sin 2theta (1+ cos 2theta ),y =...

यदि ` x=a sin 2theta (1+ cos 2theta ),y =bcos 2theta (1-cos 2theta ), ` तब ` dy//dx=`

A

` (b)/( a tan theta) `

B

` (atantheta)/(b) `

C

` ( a )/( btan theta) `

D

` ( btantheta ) /( a) `

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The correct Answer is:
D
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