differentiation

Question: A 10cm long rod AB moves with its ends on two mutually perpendicular straight lines OX and OY. If the end A be moving at the rate of $2cm/\sec $ , then when the distance of A from O is $8cm$ , the rate at which the end B is moving, is



1) $\frac{8}{3}cm/\sec $
2) $\frac{4}{3}cm/\sec $
3) $\frac{2}{9}cm/\sec $
4) None of these
Solution: Explanation: No Explanation
Application of Derivatives

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