Trigonometry and trigonometry formulas MCQs, trigonometry and trigonometry formulas quiz answers pdf, test prep 4 to study elementary school math for online certificate courses. Practice "trigonometrical ratios" Multiple Choice Questions and Answers (MCQs), trigonometry and trigonometry formulas quiz questions and answers for online study. Learn area of triangle, sine rule and formula, trigonometrical ratios test prep for online study.

"If a = 16.5 cm, angle B = 52° and c = 10 cm then the area of Δ ABC is" Multiple Choice Questions (MCQs) on trigonometry and trigonometry formulas with choices 83.01 cm², 72.01 cm², 52.03 cm², and 65.01 cm² for online study. Free math study guide for online learning trigonometrical ratios quiz questions for online elementary school.

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