Chapter 7: Class 8 Math Exam Tests

Class 8 Math MCQs - Chapter 7

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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.

MCQ 16:

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

- 72.01 cm²
- 83.01 cm²
- 52.03 cm²
- 65.01 cm²

d

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**

- 52°
- 43.23°
- 46°
- 49°

b

MCQ 18:

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

- − cos 89° = -0.2319
- − cos 29° = -0.8746
- − cos 38° = -0.7880
- − cos 98° = -0.1392

d

MCQ 19:

**For any acute angle, cosine A is equal to**

- −cos (180° - A)
- cos (180° - A)
- −cos (180° + A)
- cos (180° + A)

a

MCQ 20:

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

- 1.6
- 2.5
- 2.3
- 0.6

a

Trigonometric Ratios MCQs

Linear Inequalities MCQs

Math Applications MCQs

Indices and Standard Form MCQs

Coordinate Geometry MCQs

Trigonometry and Trigonometry Formulas MCQs

Mensuration Arc Length, Sector Area and Radian Measure MCQs

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