1.

Let A and B be the ends of the diameters 4x-y-15=0 of the circle x^(2)+y^(2)-6x-6y-16=0. A and B lie on tangents at the end point on the major axis of an ellipse such that line joining A and B is a tangent to the same ellipse at a point P. If the equation of major axis of the ellipse is y=x then the distance between the foci is

Answer»

`2sqrt(2)`
`4sqrt(2)`
`8`
`2sqrt(3)`

SOLUTION :Solve `y=x` with circle
Circle MUST passes through the FOCI of the ellipse


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