NBT Mathematics: Geometry and Trigonometry 2

Question 1

A circle has a radius of 7 cm. What is its circumference?

Accepted Answer

14π cm

Answer

49π cm

Answer

7π cm

Answer

28π cm

Question 2

In triangle ABC, angle A = 35° and angle B = 75°. What is angle C?

Accepted Answer

70°

Answer

80°

Answer

90°

Answer

60°

Question 3

What is sin(45°)?

Accepted Answer

√2/2

Answer

√3/2

Answer

1/2

Answer

1

Question 4

A rectangle has length 12 m and width 5 m. What is the length of its diagonal?

Accepted Answer

13 m

Answer

17 m

Answer

11 m

Answer

60 m

Question 5

The bearing of point B from point A is 120°. What is the bearing of A from B?

Accepted Answer

300°

Answer

240°

Answer

060°

Answer

210°

Question 6

Which of the following is the correct cosine rule for triangle ABC?

Accepted Answer

a² = b² + c² − 2bc·cos A

Answer

a² = b² + c² + 2bc·cos A

Answer

a = b·cos C + c·cos B

Answer

a² = b² − c² + 2bc·cos A

Question 7

A sector of a circle has radius 6 cm and central angle 60°. What is the area of the sector?

Accepted Answer

6π cm²

Answer

3π cm²

Answer

12π cm²

Answer

36π cm²