In the following figure, AB is an arc of the circle, C and D are the points on the circle. If `angle ACB=30^@`, Find `angle ADB`.

In the following figure, O is the centre of the circle. AB is an arc of the circle, such that angle AOB=80^@ .Find angle ACB .

In the adjoining figure, AB is the diameter of the circle and two points C and D are on the circle. If angle CAD=45^@ and angleABC=65^@ , then find the value of angle DCA .

In the following figure, O is the centre of the circle. AB and CD are equal chords. If angle AOB=100^@ , Find the angle CED .

In the circle with centre O and A,B,C are the points on the circle, angle AOB = 60^(@) . Find angle ACB

In the figure, A,B,E,C and D are the points on the circle. If AB=BE and /_ACB =30^(@) , then find /_ADE .

In the following fiure. O is the centr of the circle and AD is the diameter. If angle ACB =135^@ , then find angle DOB .

If the given figure, AB is diameter of the circle, C and D lie on the semicircle. angle ABC = 65^(@) and angle CAD = 45^(@) , find angle DCA .

In the figure, AB is the diameter of the circle. If angle AOC = 135^(@) then find the angle CDB .