defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Circles Orthogonality of Circles
If a circle passes through the point (a, b) and cut the circle x2 + y2 = 4 orthogonally, then locus of its centre is
1
2ax - 2by - (a2 + b2 + 4) = 0
2
2ax + 2by - (a2 + b2 + 4) = 0
3
2ax - 2by + (a2 + b2 + 4) = 0
4
2ax + 2by + (a2 + b2 + 4) = 0