Learn trigonometry and trigonometry formulas MCQs, grade 8 online math test 4, area of triangle multiple choice questions and answers. Area of triangle revision test has math worksheets, helping answer key with choices as 83.01 cm², 72.01 cm², 52.03 cm² and 65.01 cm² of multiple choice questions (MCQ) with area of triangle quiz as if a = 16.5 cm, angle b = 52° and c = 10 cm then area of δ abc is for competitive exam prep, viva interview questions. Free math study guide to practice area of triangle quiz to attempt multiple choice questions based test.

## MCQs on Trigonometry and Trigonometry Formulas Quiz PDF Download Worksheets 4

MCQ. 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

D

MCQ. 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°

B

MCQ. 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

D

MCQ. 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)

A

MCQ. 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

A