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The line y = mx + sqrt( 4 + 4m^(2)), m i...

The line `y = mx + sqrt( 4 + 4m^(2)), m in R ` , is a tangent to the circle

A

`x^(2) + y^(2) = 2`

B

`x^(2)+y^(2) = 4`

C

`x^(2)+ y^(2)= 1`

D

None of these

Text Solution

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The correct Answer is:
b
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