Show that the equation of a line passing...

Show that the equation of a line passing through `(acos^3theta,asin^3theta)` and perpendicualar to the line `xsectheta+ycos e ctheta=a 'i s 'xcostheta-ysintheta-acos2thetadot`

`x costheta+ysin theta=2a cos theta`

`x sin theta-ycostheta=2a sin theta`

`x sin theta+ycos theta=2a cos theta`

None of these

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