In the given figure, AB is diameter of the circle with centre O. AQ, BP and PRQ are tangents. Prove that OP and OQ are perpendicular to each other.

In the given figure, AB is diameter of a circle with centre O and AT is a tangent at angleAOQ=58^@ , find angleATQ .

In the giben figure, AB is the diameter of the circle, with centre O and AT is the tangent. Calculate the calue of x.

In the given figure, AB is the diameter of a circle with centre O. angleBCD=130^(@) . Find (i) angleDAB

In the figure, AB is a diameter of the circle with centre O and OA = 7cm. Find the area of the shaded region

In the given figure, AB is the diameter of a circle with centre O. angleBCD=130^(@) . Find (ii) angleDBA

In the figure, PO_|_QO. The tangents to the circle with centre O at P and Q intersect at a point T. Prove that PQ and OT are right bisectors of each other.

In the given figure, PA and PB are tangents to a circle with centre O. Prove that angleAPB and angleAOB are supplementary.

In the given figure, AB and XY are diameters of a circle with centre O. If angleAPX = 30^(@) , find: angleAOX

In the given figure, AB and XY are diameters of a circle with centre O. If angleAPX = 30^(@) , find: angleOAX

In the given figure, AB and XY are diameters of a circle with centre O. If angleAPX = 30^(@) , find: angleBPY