1.

If x= 9 is a chord of contact of the hyperbolax^(2) -y^(2) =9, then the equation of the tangents at one of the points of contact is

Answer»

`x+sqrt3 y+2=0`
`3x-2sqrt2 y-3=0`
`3x-sqrt2 y+6=0`
`x-sqrt3 y+2=0`

ANSWER :B


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