Source: Exemplar
In following figure, BC is a diameter of the circle and ∠BAO = 60º. Then ∠ADC is equal to:

Options
Option A
30°
Option B
45°
Option C is correct
60°
Option D
120°
In following figure, BC is a diameter of the circle and ∠BAO = 60º. Then ∠ADC is equal to:

30°
45°
60°
120°