Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The circles which can be drawn, to pass through (1, 0) and (3, 0) and to touch the y-axis, intersect at an angle θ , then cos θ is equal to-
A
B
– 
C
D
– 
Text Solution
Verified by ExpertsThe correct answer is:
B
Let A ≡ (1, 0), B ≡ (3, 0) and 
, 
be the centre of circles passing through A, B and touching the y-axis at 
and
. If r be the radius of circle (note that radius of both circles will be same), 
and
, where 
.
If 
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