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

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

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

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 :

Let H : x^(2) - y^(2) = 9, P : y^(2) = 4(x - 5), L : x = 9 be three curves. If L is the chord of contact of the hyperbola H, then the equation of the corresponding pair of tangent is

Let H : x^(2) - y^(2) = 9, P : y^(2) = 4(x - 5), L : x = 9 be three curves. If L is the chord of contact of the hyperbola H, then the equation of the corresponding pair of tangent is