In the given figure, O is the centre of the circle. If ∠OAC = 55°, then ∠OBD = ?

1. 55°

2. 35°

3. 45°

4. 70°

In the given figure, O is the centre of the circle in which ∠OBA = 30° and ∠OCA = 40°. Then, ∠BOC = ?

1. 70°

2. 100°

3. 120°

4. 140°

In the given figure, O is the centre of the circle and ∠OPQ = 30°. Then, ∠PAQ = ?

1. 60°

2. 70°

3. 80°

4. 75°

In the given figure, O is the centre of the circle and ∠AOB = 150°. Then, ∠ACB = ?

1. 75°

2. 105°

3. 85°

4. 115°