The value of c, for which the line \[y=2x+c\]is a tangent to the circle \[{{x}^{2}}+{{y}^{2}}=16\], is [MP PET 2004; Karnataka CET 2005]

The value of c, for which the line \[y=2x+c\]is a tangent to the cir

1.	The value of c, for which the line \[y=2x+c\]is a tangent to the circle \[{{x}^{2}}+{{y}^{2}}=16\], is [MP PET 2004; Karnataka CET 2005]
A.	\[-16\sqrt{5}\]
B.	20
C.	\[4\sqrt{5}\]
D.	\[16\sqrt{5}\]
Answer» D. \[16\sqrt{5}\]

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The value of c, for which the line \[y=2x+c\]is a tangent to the circle \[{{x}^{2}}+{{y}^{2}}=16\], is [MP PET 2004; Karnataka CET 2005]

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