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The length of the tangent drawn from any...

The length of the tangent drawn from any point on the circle `x^(2) + y^(2) + 2gx + 2fy + a =0` to the circle `x^(2) + y^(2) + 2gx + 2fy + b = 0` is

A

`sqrt (beta - alpha )`

B

`sqrt (alpha - beta)`

C

`sqrt (alpha beta)`

D

`sqrt (alpha //beta)`

Text Solution

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The correct Answer is:
A
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