In the adjoining figure, BC is a diameter of the circle with centre M.
PA is a tangent at A from P, which is a point on line BC. AD `bot` BC
prove that `DP^(2)=BPxxCP-BDxxCD`

In the adjoining figure, the radius of a circle with centre C is 6 cm. Line AB is a tangent at A. What is the distance of point C from line AB?

In the adjoining figure, seg EF is the diameter of the circle with centre H. Line DF is tangent at point F. If r is the radius of the circle, then prove that DE xxGE=4r^2 .

In the adjoining figure, the radius of a circle with centre C is 6 cm. Line AB is a tangent at A. d(A,B)=6 cm, find d(B,C).

In the adjoining figure, seg AB is a diameter of a circle with centre C. Line PQ is a tangent, which touches the circle at point T. Seg AP bot line PQ and seg BQ bot line PQ. Prove that seg CP cong seg CQ.

In the adjoining figure, the radius of a circle with centre C is 6 cm. Line AB is a tangent at A. What the measure of /_CAB ? Why?

In the adjoining figure, seg AB is a diameter of a circle with centre O. Bisector of inscribed /_ACB intersects circle at point D. prove: seg AD~=seg BD

In the adjoining figure, seg AB is a diameter of a circle with centre O. the bisector of angleACB intersects the circle at point D. Prove that ,seg ADcongseg BD .

In the adjoining figure, point A is the center of the circle. AN=10 cm. Line NM is tangent at M. MN=5 cm. Find the radius.

In the adjoining figure, seg RS is the diameter of the circle with centre 'O'. Point T is in the exterior of the circle. Prove that /_RTS is an acute angle.

In the adjoining figure, point O is the centre of the circle. Line PB is a tangent and line PAC is a secant. Find PA xx PC if OP=25 and radius is 7.