Learn trigonometry and trigonometry formulas MCQs, grade 8 math test 4 for online learning courses and test prep. Area of triangle multiple choice questions (MCQs), trigonometry and trigonometry formulas quiz questions and answers include math worksheets for grade 8 math tutor questions with answers.

Math multiple choice questions (MCQ): if a = 16.5 cm, angle b = 52° and c = 10 cm then area of δ abc is with options 83.01 cm², 72.01 cm², 52.03 cm² and 65.01 cm², area of triangle quiz with online schools' course questions and answers for summative assessment of students. Free math study guide to learn area of triangle quiz to attempt multiple choice questions based test.

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

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

1. 72.01 cm²
2. 83.01 cm²
3. 52.03 cm²
4. 65.01 cm²

D

MCQ: In 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 cos 82° in terms of trigonometrical ratios, 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 answer of 3 cos 125° + 5 sin 125° is

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

A