A) 11
B) \[\frac{4}{5}\sqrt{21}\]
C) \[\sqrt{\frac{17}{3}}\]
D) \[\frac{\sqrt{21}}{5}\]
Correct Answer: B
Solution :
Equation of chord of contact AB is \[3x+4y-21=0\] \[\therefore \,CM\,=\frac{4}{5}\] \[\therefore \,AM=\sqrt{4-C{{M}^{2}}}\,=\frac{2}{5}\,\sqrt{21}\] \[\therefore \,AB\,=\frac{4}{5}\,\sqrt{21}\]You need to login to perform this action.
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