A. y=√3x±8
B. x=√3x±8
C. 2y=√3x-8
D. 2x=√3x-8
The common chord of x2+y2-4x-4y=0 and x2+y2=16 substends at the origin an angle equal to
The conjugate line of 3x+4y-45=0 with respect to x2+y2-6x-8y+5=0 which is perpendicular to x+y=0 is
The equation of the circle having a radius 2 and passing through the limiting points of the coaxal system x2+y2-6-2λ(x+y-4)=0 is
If the lines 2x-y+11=0, x-2y+3=0 intersecting the coordinate axes in four concyclic points then the centre of the circle passing through these four points is
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The circle on the chord x cos α+ y sin α=p of the circle x2+y2=r2 as diameter is
The internal centre of similitude of the two circles x2+y2+6x-2y+1=0, x2+y2-2x-6y+9=0 is
If the line x+y+1=0 touches the circle x2+y2-3x+7y+14=0, then the point of contact is
The equation of the tangents to a circle x2+y2-4x-6y-12=0 and parallel to 4x-3y=1 are
Equation x2+2ax-b2=0 has real roots α, β and equation x2+2px-q2=0 has real roots γ, δ. If circle C is drawn with the points (α, γ), (β, δ) as extremities of a diameter, then the equation of C is