Consider the circles `x^2+y^2-8x + 1 5 =0,x^2 +y^2-24x+135=0`.Which of the followign ARETRUE?

Consider the circle x^2 + y^2 + 8x + 10y - 8 = 0 (i) Find its radius of the circle x^2 + y^2 + 8x + 10y - 8 = 0 (ii) Find the equation of the circle with centre at C and passing through (1,2).

The angle at which the circles x^(2) + y^(2) + 8x - 2y - 9 = 0 , x^(2) + y^(2) - 2x + 8y - 7 = 0 in tersect is

For what value of k is the circle x^2 + y^2 + 5x + 3y + 7 = 0 and x^2 + y^2 - 8x + 6y + k = 0 cut each other orthogonally.

The point from which the tangents to the circles x^2 +y^2-8x + 40 = 0,5x^2+5y^2 -25x +80=0, and x^2 +y^2-8x + 16y + 160 = 0 are equal in length, is

If the lengths of tangents drawn to the circles x^(2) + y^(2) - 8x + 40 = 0 5x^(2) + 5y^(2) - 25x + 80 = 0 x^(2) + y^(2) - 8x + 16y + 160 = 0 From the point P are equal, then P is equal to

The point from which the tangents to the circles x^2+y^2-8x+40=0, 5x^2+5y^2-25x+80=0 and x^2+y^2-8x+16y+160=0 are equal in length is