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The equation of normal to the curve x^(2...

The equation of normal to the curve `x^(2//3)+y^(2//3)=a^(2//3)` at `(asin^(3) theta, a cos^(3) theta)` is

A

(a) `xsintheta-ycostheta=asin^4theta-acos^4theta`

B

(b) `xsintheta+ycostheta=asin^4theta+acos^4theta`

C

(c) `xsintheta-ycostheta=asin^4theta+acos^4theta`

D

(d) `xsintheta+ycostheta=asin^4theta-acos^4theta`

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The correct Answer is:
A
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