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[" 17.If "x=9" is the chord of contact o...

[" 17.If "x=9" is the chord of contact of the hyperbola "x^(2)-y^(2)=9" ,then the equation of the corresponding pair "],[" tangents is "],[[" (A) "9x^(2)-8y^(2)+18x-9=0," (B) "9x^(2)-8y^(2)-18x+9=0],[" (C) "9x^(2)-8y^(2)-18x-9=0," (D) "9x^(2)-8y^(2)+18x+9=0]]

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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 :

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 :

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)9x^(2)-8y^(2)+18x-9=0(B)9x^(2)-8y^(2)-18x+9=0(C)9x^(2)-8y^(2)-18x-9=0(D)9x^(^^)2-8y^(^^)2+18x+9=0'

If x=3 is the chord of the contact of the circle x^(2)+y^(2)=81, then the equation of the corresponding pair of tangents,is

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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) 9x^2-8y^2+18x-9=0 (B) 9x^2-8y^2-18x+9=0 (C) 9x^2-8y^2-18x-9=0 (D) 9x^2-8y^2+18x+9=0

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) 9x^2-8y^2+18x-9=0 (B) 9x^2-8y^2-18x+9=0 (C) 9x^2-8y^2-18x-9=0 (D) 9x^2-8y^2+18x+9=0