[" 13."],[" In the above diagram (not to scale),"AB=AC" ."],[" is the centre of the circle.If "/_ABC:=80^(@)" ,then "]

In the above diagram (not to scale), AB=AC= . O is the centre of the circle. If /_ ABC =80^(@) , then /_ BOC =

In the figure above (not to scale), AB is the diameter of the circle with centre O. If /_ ACO=30^(@), then find /_ BOC .

In the given figure,O is the centre of the circle and BA =AC. If /_ABC=50^(@), find /_BOC and /_BDC.

In Figure,AB=CB and O is the centre of the circle.Prove that BO bisects /_ABC .