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If x = 9 is the chord of contact of the ...

If x = 9 is the chord of contact of the hyperbola `x^2-y^2=9` , then the equation of the corresponding pair of tangents is :

A

`9 x^(2)-8 y^(2)+18 x-9=0`

B

`9 x^(2)-8 y^(2)-18 x+9=0`

C

`9 x^(2)-8 y^(2)-18 x-9=0`

D

`9 x^(2)-8 y^(2)+18 x+9=0`

Text Solution

Verified by Experts

The correct Answer is:
B
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