Home
Class 11
MATHS
A tangent at a point on the circle x^2+y...

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`

Promotional Banner

Similar Questions

Explore conceptually related problems

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is :

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4 The radius of the circle is:

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is

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=

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

If tangent at (1,2) to the circle C_(1):x^(2)+y^(2)=5 intersects the circle C_(2):x^(2)+y^(2)=9 at A and B and tangents at A and B to the second circle meet at point C, then the co- ordinates of C are given by

The tangent to the circle x^(2)+y^(2)=5 at the point (1, -2) also touches the circle x^(2)+y^(2)-8x+6y+20=0 at the point

The area of the triangle formed by the tangent at the point (a,b) to the circle x^(2)+y^(2)=r^(2) and the co-ordinate axes is: