# If the line $y=2x+c,$ is a tangent to the circle $x^2+y^2=5,$ then a value of c is

$\begin {array} {1 1} (a)\;2 & \quad (b)\;3 \\ (c)\;4 & \quad (d)\;5 \end {array}$

## 1 Answer

(d) 5
answered Nov 7, 2013 by

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1 answer

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1 answer

1 answer

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1 answer