CircleHard
Question
If the lengths of the tangents drawn from the point (1, 2) to the circles x2 + y2 + x + y − 4 = 0 and 3x2 + 3y2 − x − y + k = 0 be in the ratio 4 : 3, then k =
Options
A.21/2
B.7/2
C.−21/4
D.7/4
More Circle Questions
In a right triangle ABC, right angled at A, on the leg AC as diameter, a semicircle is described The chord joining A wit...Let x2 + y2 - 2x - 2y = 0 & x2 + y2 + 2ax + 2ay + b = 0 are two different circles. If L is the only common tangent of th...The equations of tangents to the circle x2 + y2 − 22x − 4y + 25 = 0 which are perpendicular to the line 5x +...3 circle of radii 1, 2 and 3 and centres at A, B and C respectively, touch each other. An other circle whose centre is P...Identify the correct statement(s) -...