CircleMedium
Question
If the equation of the in-circle of an equilateral triangle is x2 + y2 + 4x − 6y + 4 = 0, then equation of circum-circle of the triangle is-
Options
A.x2 + y2 + 4x + 6y − 23 = 0
B.x2 + y2 + 4x − 6y − 23 = 0
C.x2 + y2 − 4x − 6y − 23 = 0
D.None of these
More Circle Questions
Equation of line passing through mid point of intercepts made by circle x2 + y2 _ 4x _ 6y = 0 on co-ordinate axes is...The centre(s) of the circle (s) passing through the points (0, 0), (1, 0) and touching the circle x2 + y2 = 9 is/are-...If two distinct chords of a parabola x2 = 4ay passing through (2a, a) are bisected on the line x + y = 1, then length of...A rectangle ABCD is inscribed in a circle with a diameter lying along the line 3y = x + 10. If A and B are the points (&...In a right triangle ABC, right angled at A, on the leg AC as diameter, a semicircle is described The chord joining A wit...