A) \[x-2y=2\]
B) \[x+2y=\pm \,2\sqrt{3}\]
C) \[x+2y=\pm \,2\sqrt{5}\]
D) \[x-2y=\pm \,2\sqrt{5}\]
Correct Answer: C
Solution :
Trick: Only (b) and (c) lines are parallel to \[x+2y+3=0\] Also the line is a tangent to \[{{x}^{2}}+{{y}^{2}}=4\] Its distance from (0, 0) should be 2. Therefore c is the answer. Alternative method:You need to login to perform this action.
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