In the given circle ‘O’ is the centre. ∠ABC + ∠AOC = 2 right angles. Then ∠AOD =
A. 120°
B. 60°
C. 90°
D. 180°
Answer:B
In the given circle ‘O’ is the centre. ∠ABC + ∠AOC = 2 right angles. Then ∠AOD =
A. 120° B. 60° C. 90° D. 180°