In the given figure , O is the centre of the circle. AB and AC are
tangents to the circle such that BA`bot`CA.
Prove that `square` BACO is a square.

In the given figure , O is the centre of the circle. If m(arc AXB)= 80^@ , then mangleAOB =

In the adjoining figure, O is the centre of the circle. Seg AB, seg AC are tangent segments. Radius of the circle is r and l(AB) = r. Prove that , square ABOC is a square.

In the given figure, Q is the centre of the circle and PM ,PN are tangent segments to the circle. If angleMPN=50^@ find angleMQN .

In the adjoining figure, point P is the centre of the circle and line AB is the tangent of the circle at T. The radius of the circle is 6 cm. Find PB if /_TPB=60^@

In the figure , point P is the centre of the circle and AB is the diameter. The co-ordinates of A are

In the adjoining figure,O is the centre of the circle.Find the value of /_ABP if /_POB=90^@ .

In the adjoining figure , Q is the centre of the circle and PM, PN are tangent segments to the circle. IF angleMPN=40^@ , find angleMQN .

In the given figure, if DE abs() AC , then AB =

Point O is the centre of a circle . Line a and line b are parallel tangents to the circle at P and Q. Prove that segment PQ is a diameter of the circle.

In the figure, point A is the centre of the circle and its tangent CD touches the circle at point B, The radius of the circle is 4cm .If mangleBAC=30^@ , then find AC