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Tangents PA and PB drawn to x^(2) + y^(...

Tangents PA and PB drawn to ` x^(2) + y^(2) = 9` from any arbitrary point 'P' on the line `x + y 25 ` . Locus of mid- point of chord AB is

A

` 25 ( x^(2) + y^(2)) = 9 ( x + y)`

B

` 25 ( x^(2) + y^(2)) = 3 ( x + y)`

C

` 5 ( x^(2) + y^(2) ) = 3 ( x + y)`

D

None of these

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The correct Answer is:
A
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