Let A,B be the centres of two circles of equal radii,draw them so that each one of them passes through the centre of the other.Let them intersect at C and D.Examine therther `bar AB` and `bar CD` are at right angles.

Let A,B be the centres of two cirlces of equal radii , draw them so that each one of them passes through the centres of the other .

If two equal chords intersect each other, then the bisector of the angle between them pass through the centre.

If a line intersects two concentric circles (circles with the same centre) with centre O at A, B, C and D, prove that AB = CD

If a line intersects two concentric circles (circles with the same centre) with centre O at A,B,C and D, prove that AB = CD

The centres of two circles C_(1) and C_(2) each of unit radius are at a distance of 6 unit from each other. Let P be the mid-point of the line segment joining the centres of C_(1) and C_(2) and C be a circle touching circles C_(1) and C_(2) externally. If a common tangent to C_(1) and C passing through P is also a common tangent to C_(2) and C, then the radius of the circle C, is

A circle arc of radius 1 subtends an angle of x radians as shown in figure. The centre of the circle is O and the point C is the intersection of two tangent lines at A and B. Let T(x) be the area of DeltaABC and S(x) be the area of shaded region. lim_(xto0)(S(x))/x is

If A,B,C are three points on a line such that AB= 5 cm,BC = 3 cm and AC = 8 cm,which one of them lkies between the other two?

A circle arc of radius 1 subtends an angle of x radians as shown in figure. The centre of the circle is O and the point C is the intersection of two tangent lines at A and B . Let T(x) be the area of DeltaABC and S(x) be the area of shaded region. lim_(xto0)(T(x))/(x^(3)) is