A) 1
B) 2
C) 3
D) 4
Correct Answer: C
Solution :
The length of the tangent drawn to the circle \[{{x}^{2}}+{{y}^{2}}-2x+4y-11=0\]from the point\[(1,3)\] \[=\sqrt{{{1}^{2}}+{{3}^{2}}-2.1+12-11}\] \[=\sqrt{1+9-2+12-11}\] \[=\sqrt{22-13}=\sqrt{9}\] \[=3\]You need to login to perform this action.
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