CircleMedium
Question
If the line (x + g) cos θ + (y + f) sin θ = k touches the circle x2 + y2 + 2gx + 2fy + c = 0, then -
Options
A.g2 + f2 = k2 + c2
B.g2 + f2 = k + c
C.g2 + f2 = k2 + c
D.None of these
More Circle Questions
Let the centre of the circle $x^{2} + y^{2} + 2gx + 2fy + 25 = 0$ be in the first quadrant and lie on the line $2x - y =...If the circles of same radius a and centres at (2, 3) and (5, 6) cut orthogonally, then a is equal to-...The circle x2 + y2 − 4x − 4y + 4 = 0 is-...The equation of the normal at the point (4, − 1) of the circle x2 + y2 − 40x + 10y = 153 is-...Two perpendicular tangents to the circle x2 + y2 = a2 meet at P. Then the locus of P has the equation-...