Cosine Rule Multiple Choice Questions with Answers – PDF Download

MCQ 1: For the Cosine Rule of any triangle ABC, the 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

MCQ 2: For the Cosine Rule of any triangle ABC, the 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

MCQ 3: Considering The Cosine Rule of any triangle ABC, the 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

MCQ 4: For the Cosine Rule of any triangle ABC, the a² is equal to:

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

MCQ 5: The Cosine Rule is also known as:

1. Sine triangle
2. Cosine Formula
3. Cosine Triangle
4. Cosine Area