CircleHard
Question
A pair of tangents are drawn from the origin to the circle x2 + y2 + 20(x + y) + 20 = 0. The equation of the pair of tangents is-
Options
A.x2 + y2 + 5 xy = 0
B.x2 + y2 + 10xy = 0
C.2x2 + 2y2 + 5xy = 0
D.2x2 + 2y2 − 5xy = 0
More Circle Questions
Consider the circle x2 + (y − 1)2 = 9, (x − 1)2 + y2 = 25. They are such that-...The number of tangents that can be drawn from the point (8, 6) to the circle x2 + y2 _ 100 = 0 is...Circle x2 + y2 − 4x − 8y − 5 = 0 will intersect the line 3x − 4y = m in two distinct points, if ...Equation of line passing through mid point of intercepts made by circle x2 + y2 _ 4x _ 6y = 0 on co-ordinate axes is...Line 3x + 4y = 25 touches the circle x2 + y2 = 25 at the point -...