Practice MCQ Questions and answers on Chapter 7: Trigonometry & Trigonometry Formulas - Math Mcqs for Grade 8

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Chapter 7: Trigonometry & Trigonometry Formulas - Math Mcqs for Grade 8

1.

Considering 0° < x < 180°, the angle of sin x = 0.2385 is

A. 21° , 170.32°

B. 18.02° , 165.02°

C. 14° , 150°

D. 13.80° , 166.20°

Answer & Solution Discuss in Board

2.

The formula for the area of a triangle ABC is

A. 1/2ab sin C + 1/2bc sin A + 1/2ac sin B

B. 1/2ab sin C = 1/2bc sin A = 1/2ac sin B

C. 3/2ab sin C = 3/2bc sin A = 3/2ac sin B

D. 2ab sin C = 2bc sin A = 2ac sin B

Answer & Solution Discuss in Board

3.

In Δ ABC, angle A = 110° and AC = 2AB. If the area of Δ ABC is 15.5 cm² then the length of AB is

A. 3.06 cm

B. 6.05 cm

C. 4.06 cm

D. 5.06 cm

Answer & Solution Discuss in Board

4.

Considering the Cosine rule, the cos C is equal to

A. a² - b² - c²⁄2bc

B. 2a² + 2b² + 2c²⁄2abc

C. a² + b² - c²⁄2ab

D. 2a + 2b - 2c⁄2ac

Answer & Solution Discuss in Board

5.

If cos 55° and sin 55° = 0.8 each then the answer of cos 125° + 5 sin 55° is

A. 2.4

B. 2.8

C. 3.2

D. 0.8

Answer & Solution Discuss in Board

6.

The dimensions of plane includes

A. breadth and length

B. length only

C. breadth only

D. depth and length

Answer & Solution Discuss in Board

7.

By expressing the sin 170° in terms of trigonometrical ratios, the answer will be

A. sin 10° = 0.1631

B. sin 10° = 0.1736

C. sin 10° = 0.3761

D. sin 10° = 1.7362

Answer & Solution Discuss in Board

Practice MCQ Questions and answers on Chapter 7: Trigonometry & Trigonometry Formulas - Math Mcqs for Grade 8

1. Considering 0° < x < 180°, the angle of sin x = 0.2385 is

Answer & Solution

2. The formula for the area of a triangle ABC is

Answer & Solution

3. In Δ ABC, angle A = 110° and AC = 2AB. If the area of Δ ABC is 15.5 cm² then the length of AB is

Answer & Solution

4. Considering the Cosine rule, the cos C is equal to

Answer & Solution

5. If cos 55° and sin 55° = 0.8 each then the answer of cos 125° + 5 sin 55° is

Answer & Solution

6. The dimensions of plane includes

Answer & Solution

7. By expressing the sin 170° in terms of trigonometrical ratios, the answer will be

Answer & Solution

Read More Section(Mathematics Quizzes)

1.

Considering 0° < x < 180°, the angle of sin x = 0.2385 is

2.

The formula for the area of a triangle ABC is

3.

In Δ ABC, angle A = 110° and AC = 2AB. If the area of Δ ABC is 15.5 cm² then the length of AB is

4.

Considering the Cosine rule, the cos C is equal to

5.

If cos 55° and sin 55° = 0.8 each then the answer of cos 125° + 5 sin 55° is

6.

The dimensions of plane includes

7.

By expressing the sin 170° in terms of trigonometrical ratios, the answer will be