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If OA and OB be the tangents to the circ...

If `OA` and `OB` be the tangents to the circle `x^2 + y^2-6x-8y + 21 = 0` drawn from the origin `O`, then `AB`

A

11

B

`(4)/(5) sqrt21`

C

`sqrt((17)/(3))`

D

None of these

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The correct Answer is:
B
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