If 3 is a root of the quadratic equation x² - px + 3 = 0 then p is equal to :

1. 4

2. 3

3. 5

4. 2

In the given figure ∠BAP = ∠DCP = 70°, PC = 6 cm and CA = 4 cm, then PD : DB is :

1. 5 : 3

2. 3 : 5

3. 3 : 2

4. 2 : 3

(1 + sin A)(1 - sin A) is equal to :

1. cosec² A

2. sin² A

3. sec² A

4. cos² A

The centroid of the triangle whose vertices are (-4, -2), (6, 2) and (4, 6) is :

1. (2, 2)

2. (2, 3)

3. (3, 3)

4. (0, -1)