In the adjoining figure, 0 is the centre of the circle. If ∠ABC = 20°, then ∠AOC is equal to :
A. 20°
B. 40°
C. 60°
D. 10°
Answer:B
In the adjoining figure, 0 is the centre of the circle. If ∠ABC = 20°, then ∠AOC is equal to :
A. 20° B. 40° C. 60° D. 10°