Q 1123478341.     If

`x=a{costheta+logtan(theta/2)}` and

`y=asintheta` ,then `(dy)/(dx)=`

EAMCET 2008
A

`cottheta`

B

`tantheta`

C

`sintheta`

D

`costheta`

HINT

`:.(dy)/(dx)=((dy)/(d theta))/((dx)/(d theta))`

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