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The equations of the tangents to the cir...

The equations of the tangents to the circle `x^2+y^2=a^2` parallel to the line `sqrt3x+y+3=0` are

A

`sqrt3x+y+-2a=0`

B

`sqrt3x+y+-a=0`

C

`sqrt3x+y+-4=0`

D

`sqrt3y-x+3=0`

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