Practice trigonometry and trigonometry formulas Multiple Choice Questions (MCQs), trigonometry and trigonometry formulas quiz answers, test prep 1 to learn elementary school math for online certificate programs. Cosine rule MCQs, trigonometry and trigonometry formulas quiz questions and answers for free online courses. Learn cosine rule, sine rule and formula test prep for distance learning.

Learn math MCQs: for cosine rule of any triangle abc, b² is equal to, with choices a³ + c³ - 3ab cos a, a² - c² + 2ab cos a, a² + c² - 2ac cos b, and a² - c² 4bc cos a for free online courses. Free math study guide for online learning cosine rule quiz questions for online certificate courses.

MCQ: For Cosine Rule of any triangle ABC, b² is equal to

1. a² - c² + 2ab cos A
2. a³ + c³ - 3ab cos A
3. a² + c² - 2ac cos B
4. a² - c² 4bc cos A

C

MCQ: For Cosine Rule of any triangle ABC, c² is equal to

1. c² + a² + 2ac cos C
2. a² + b² - 2ab cos C
3. a² + b² + 2ab cos A
4. a² - b² + 2ab sin A

B

MCQ: In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is

1. 69°
2. 66°
3. 60°
4. 63°

C

MCQ: Considering Cosine Rule of any triangle ABC, possible measures of angle A includes

1. angle A is obtuse
2. angle A is acute
3. angle A is right-angle
4. all of above

D

MCQ: Sine rule for a triangle states that

1. a/sin A = b/sin B = c/sin C
2. sin A/a = sin B/b = sin C/c
3. a/sin A + b/sin B + c/sin C
4. 2a/sin A = 2b/sin B = 2c/sin C

B