In the adjoining figure, `O` is the centre of the circle and AC is its diameter. If `angleBAC=30^@`, then find `angleBOC`.

In the adjoining figure, O is the centre of the circle and AB is one of its diameter . If angleADC = 120^(@) , then the value of angleBAC is

In the adjoining figure, O is the centre of the circle and AB is its diameter. If AC=8 cm and BC= 6cm, then find the radius of the circle.

In the adjoining figure, O is the centre of the circle and AB is its diameter. If AC=8 cm and BC= 6cm, then find the radius of the circle.

In the adjoining figure, O is the centre of the circle and AB= AC , if angleABC=32^(@) , then find the value angle BDC

In the following figure, O is the centre of the circle , AC is the diameter and if angle APB =120^@ , then find angle BQC .

In the adjoining figure, O is the center of the circle and AC is a diameter of it If DC||EB, angleAOB=80^(@)andangleACE=10^(@) , then find the value of angleBED.

In the adjoining figure , O is the centre of the circle and angleOAB=60^(@) . Find angle APC .

In the adjoining figure , O is the centre of the circle and angleOAB=60^(@) . Find angle APC .

In the adjoining figure, O is the centre of the circle. Find the value of angle BEC .

In the adjoining figure, O is the centre of the circle. Find the value of angle BEC .