A tangent at a point on the circle `x^2+y^2=a^2` intersects a concentric circle `C` at two points `Pa n dQ` . The tangents to the circle `X` at `Pa n dQ` meet at a point on the circle `x^2+y^2=b^2dot` Then the equation of the circle is `x^2+y^2=a b` `x^2+y^2=(a-b)^2` `x^2+y^2=(a+b)^2` `x^2+y^2=a^2+b^2`

A tangent at a point on the circle x^2+y^2=a^2 intersects a concentric circle C at two points Pa n dQ . The tangents to the circle X at Pa n dQ meet at a point on the circle x^2+y^2=b^2dot Then the equation of the circle is (a) x^2+y^2=a b (b) x^2+y^2=(a-b)^2 (c) x^2+y^2=(a+b)^2 (d) x^2+y^2=a^2+b^2

A tangent at a point on the circle x^(2)+y^(2)=a^(2) intersects a concentric circle C at two points P and Q. The tangents to the circle X at P and Q meet at a point on the circle x^(2)+y^(2)=b^(2). Then the equation of the circle is x^(2)+y^(2)=abx^(2)+y^(2)=(a-b)^(2)x^(2)+y^(2)=(a+b)^(2)x^(2)+y^(2)=a^(2)+b^(2)

A tangent at a point on the circle x^(2)+y^(2)=a^(2) intersects a concentrie circle S at P and Q. The tangents to S at P and Q meet on the circle x^(2)+y^(2)=b^(2) . The equation to the circle S in

A tangent is drawn to the circle 2(x^(2)+y^(2))-3x+4y=0 and it touches the circle at point A. If the tangent passes through the point P(2, 1),then PA=

A tangent is drawn to the circle 2(x^(2)+y^(2))-3x+4y=0 and it touches the circle at point A. If the tangent passes through the point P(2, 1),then PA=

If the tangent at P on the circle x^(2)+y^(2)=a^(2) cuts two parallel tangents of the circle at A and B then PA.PB=

If the tangent at P on the circle x^(2) +y^(2) =a^(2) cuts two parallel tangents of the circle at A and B then PA, PB =

Slope of tangent to the circle (x-r)^(2)+y^(2)=r^(2) at the point (x.y) lying on the circle is