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If x=a\ cos^3theta,\ \ y=a\ sin^3theta ,...

If `x=a\ cos^3theta,\ \ y=a\ sin^3theta` , then `sqrt(1+((dy)/(dx))^2)=` (a)`t a n^2theta` (b) `s e c^2theta` (c) `sectheta` (d) `|sectheta|`

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RD SHARMA ENGLISH-DIFFERENTIATION-All Questions
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