In the figure, O is the centre of the circle, find ∠x+∠y?
In the given figure, O is the centre of the circle. Find x.
In the figure, O is the centre of the circle. If ∠CEA=30o, find the values of x, y and z.
In the figure, O is the centre of the circle, prove that ∠x=∠y+∠z.