Two circles are drawn through the points `(a,5a) and (4a, a)` to touch the y-axis. Prove that they intersect at angle `tan^-1(40/9).`

Two circles are drawn through the points (1,5) and (4,1) to touch the axis of y. Find the angle at which they intersect.

The circle passing through the point (-1,0) and touching the y-axis at (0,2) also passes through the point:

The circle passing through the point (-1,0) and touching the y-axis at (0,2) also passes through the point:

The circle passing through the point (-1,0) and touching the y-axis at (0,2) also passes through the point:

The circle passing through the point (-1,0) and touching the y -axis at (0,2) also passes through the point:

The circle passing through the point (-1,0) and touching the y-axis at (0, 2) also passes through the point:

The circle passing through the point ( -1,0) and touching the y-axis at (0,2) also passes through the point.

The circles which can be drawn to pass through (3,0) and (5,0) and to touch the y-axis intersect at an angle theta , then costheta is equal to

The circle which can be drawn to pass through (1, 0) and (3, 0) and to touch the y-axis intersect at angle thetadot Then costheta is equal to (a) 1/2 (b) -1/2 (c) 1/4 (d) -1/4