# Cosine Rule Questions and Answers PDF Book Download

Cosine rule MCQs, cosine rule quiz answers for online elementary school courses. Trigonometry and trigonometry formulas multiple choice questions (MCQs), cosine rule quiz questions and answers for online elementary education degree. Sine rule and formula, area of triangle, cosine rule test prep for elementary school teaching certification.

Learn math MCQs: for cosine rule of any triangle abc, b² is equal to, with choices a² - c² + 2ab cos a, a³ + c³ - 3ab cos a, a² + c² - 2ac cos b, and a² - c² 4bc cos a for online elementary education degree. Free math student portal for online learning cosine rule quiz questions, MCQs to find questions answers based online learning tests.

## MCQ on Cosine Rule PDF Book Download

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

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

C

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

- c² + a² + 2ac cos C
- a² + b² - 2ab cos C
- a² + b² + 2ab cos A
- a² - b² + 2ab sin A

B

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

- angle A is obtuse
- angle A is acute
- angle A is right-angle
- all of above

D

MCQ: For Cosine Rule of any triangle ABC, a² is equal to

- b² + c² - 2bc cos A
- b² + a² - 2ac cos A
- b³ + c³ - 2bc cos B
- b² - c² + 3bc cos C

A

MCQ: Cosine Rule is also known as

- Sine triangle
- Cosine Formula
- Cosine Triangle
- Cosine Area

B