# Trigonometry and Trigonometry Formulas Multiple Choice Questions Test 4 pdf Download

Practice math quiz 4 on trigonometry and trigonometry formulas MCQs, grade 8 area of triangle multiple choice questions. Free area of triangle guide has math worksheet with answering options 83.01 cm^{2}, 72.01 cm^{2}, 52.03 cm^{2} and 65.01 cm^{2} 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 exam prep. Study to learn area of triangle quiz to attempt multiple choice questions based test.

## MCQs on Trigonometry and Trigonometry Formulas - Quiz 4

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

- 72.01 cm
^{2} - 83.01 cm
^{2} - 52.03 cm
^{2} - 65.01 cm
^{2}

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

- 52°
- 43.23°
- 46°
- 49°

B

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

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

D

MCQ. For any acute angle, cosine A is equal to

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

A

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

- 1.6
- 2.5
- 2.3
- 0.6

A