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The equation of normal to the curve x= a...

The equation of normal to the curve `x= a cos^(3) theta, y=a sin^(3) theta" at "theta=(pi)/(4)` is

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The correct Answer is:
`b^(2) - a^(2)`
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OSWAAL PUBLICATION-APPLICATIONS OF DERIVATIVES-TOPIC -2 TANGENTS AND NORMALS (SHORT ANSWER TYPE QUESTIONS - II )
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