ABC is a right angled triangle whose hypotenuse is AC. If AB : BC = 3 : 4, then the smallest angle of the triangle is :

1. ∠A

2. ∠B

3. ∠C

4. None of these

If a, b, c be the lengths of the sides of a triangle, then :

1. a = b + c

2. a < b + c

3. a > b + c

4. a < b - c

In a △ABC, ∠A = 40° and ∠B = 60°. The longest side of the triangle is:

1. AB

2. BC

3. CA

4. None of these

In a △ABC, AB = 6 cm, BC = 7 cm and CA = 8 cm. The smallest angle of the triangle is :

1. ∠A

2. ∠B

3. ∠C

4. None of these