A) \[25\sqrt{3}\]
B) \[25\]
C) \[\frac{25}{\sqrt{3}}\]
D) \[\frac{25}{3}\]
Correct Answer: C
Solution :
\[{{x}^{2}}+{{y}^{2}}=4\left( \frac{dy}{dt} \right)=-25\] \[x\frac{dx}{dt}+y\frac{dy}{dt}=0\] \[\sqrt{3}\frac{dx}{dt}-1(25)=0\] \[\frac{dx}{dt}=\frac{25}{\sqrt{3}}cm/\sec \]You need to login to perform this action.
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