The centres of a set of circle, each of radius 3, lies on the circle |
|||||||
a) |
|
b) |
|
c) |
|
d) |
|
The centres of a set of circle, each of radius 3, lies on the circle |
|||||||
a) |
|
b) |
|
c) |
|
d) |
|
(a)
Let be any point in the set, then equation of circle is
But lies on
Then
Distance between the centres of two circles
Therefore, locus of is