1.

IF the angle between a pair of tangents drawn from a point P on the circle x^2+y^2+4x-6y+9 sin^2 a+13 cos^2a=0 us 2a, then the equation of the locus of P is

Answer»

`x^2+y^2+4x-6y+4=0`
`x^2+y^2+4x-6y-9=0`
`x^2+y^2-4x+6y-4=0`
`x^2+y^2+4x-6y+9=0`

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