Tangents AB and AC are drawn to the circle `x^2 +y^2-2x + 4y +1=0` from `A(0.1)` then equation of circle passing through `A,B and C` is

If tangents are drawn from origin to the circle x^(2)+y^(2)-2x-4y+4=0, then

The length of the tangent drawn to the circle x^(2)+y^(2)-2x+4y-11=0 from the point (1,3) is

If y+c=0 is a tangent to the circle x^2+y^2-6x-2y+1=0 at (a,4) then

If x - y + 1 = 0 meets the circle x^(2) + y^(2) + y - 1 = 0 at A and B , then the equation of the circle with AB as diameter is

If the tangents AB and AQ are drawn from the point A(3, -1) to the circle x^(2)+y^(2)-3x+2y-7=0 and C is the centre of circle, then the area of quadrilateral APCQ is :

If the tangents AB and AQ are drawn from the point A(3, -1) to the circle x^(2)+y^(2)-3x+2y-7=0 and C is the centre of circle, then the area of quadrilateral APCQ is :