Question
Question: Incentre of the triangle formed by common tangents of the circles x<sup>2</sup> + y<sup>2</sup> – 6x...
Incentre of the triangle formed by common tangents of the circles x2 + y2 – 6x = 0 and x2 + y2 + 2x = 0 is
A
(3, 0)
B
(– 1, 0)
C
(– 1/2, 0)
D
(–5/2, 0)
Answer
(– 1, 0)
Explanation
Solution
clearly incentre of DABC is (–1, 0)