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The range of values of m for which the l...

The range of values of m for which the line `y = mx + 2 ` cuts the circle `x^(2)+y^(2) = 1` at distinct or coincident points is `:`

A

`( - oo, - sqrt( 3)] uu [ sqrt( 3) ,+oo)`

B

`[ - sqrt( 3) , sqrt( 3) ]`

C

`[ sqrt( 3) , + oo)`

D

None of these

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The correct Answer is:
a
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