The number of tangents which can be drawn from the point (?1,2) to the circle \[{{x}^{2}}+{{y}^{2}}+2x-4y+4=0\] is [BIT Ranchi 1991]

The number of tangents which can be drawn from the point (?1,2) to the

1.	The number of tangents which can be drawn from the point (?1,2) to the circle \[{{x}^{2}}+{{y}^{2}}+2x-4y+4=0\] is [BIT Ranchi 1991]
A.	1
B.	2
C.	3
D.	0
Answer» E.

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The number of tangents which can be drawn from the point (?1,2) to the circle \[{{x}^{2}}+{{y}^{2}}+2x-4y+4=0\] is [BIT Ranchi 1991]

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