Class 8 Courses

Chapter 7: Class 8 Math Exam Tests

Class 8 Math MCQs - Chapter 7

# Trigonometry and Trigonometry Formulas Trivia Questions and Answers PDF - 4

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The Trigonometry and trigonometry formulas Trivia Questions and Answers PDF, trigonometry and trigonometry formulas Quiz Answers PDF Download e-Book Ch. 7-4 to study Grade 8 Math Course. Practice Area of Triangle MCQ PDF, Trigonometry and Trigonometry Formulas Quiz Questions and Answers to learn online certification courses. The Trigonometry and Trigonometry Formulas Trivia App Download: Free certification app for area of triangle, sine rule and formula, trigonometrical ratios test prep for online school courses.

The Trivia Quiz: If a = 16.5 cm, angle B = 52° and c = 10 cm then area of Δ ABC is; "Trigonometry and Trigonometry Formulas" App APK Download with answers: 83.01 cm²; 72.01 cm²; 52.03 cm²; 65.01 cm²; to learn online certification courses. Practice Area of Triangle MCQ Questions, download Kindle eBook (Free Sample) for online education.

## Trigonometry and Trigonometry Formulas Questions & Answers : MCQ Quiz 4

MCQ 16:

If a = 16.5 cm, angle B = 52° and c = 10 cm then the area of Δ ABC is

1. 72.01 cm²
2. 83.01 cm²
3. 52.03 cm²
4. 65.01 cm²
MCQ 17:

In the triangle ABC, if angle B = 60°, b = 11 cm and c = 8.7 cm then angle A and length of 'a' is

1. 52°
2. 43.23°
3. 46°
4. 49°
MCQ 18:

By expressing the cos 82° in terms of trigonometrical ratios, the answer will be

1. − cos 89° = -0.2319
2. − cos 29° = -0.8746
3. − cos 38° = -0.7880
4. − cos 98° = -0.1392
MCQ 19:

For any acute angle, cosine A is equal to

1. −cos (180° - A)
2. cos (180° - A)
3. −cos (180° + A)
4. cos (180° + A)
MCQ 20:

If cos 55° and sin 55° = 0.8 each then the answer of 3 cos 125° + 5 sin 125° is

1. 1.6
2. 2.5
3. 2.3
4. 0.6

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