Class 8 Math MCQ Questions

Class 8 Math MCQs - Chapter 7

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The Multiple Choice Question (MCQ Quiz) "For the Cosine Rule of any triangle ABC, the b² is equal to" PDF, *Trigonometry and Trigonometry Formulas* App Download (Free) with a³ + c³ - 3ab cos a, a² - c² + 2ab cos a, a² + c² - 2ac cos b, and a² - c² 4bc cos a choices for free online courses. Solve cosine rule quiz questions, download Google eBook (Free Sample) for online certificate courses.

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

A) a² - c² + 2ab cos A

B) a³ + c³ - 3ab cos A

C) a² + c² - 2ac cos B

D) a² - c² 4bc cos A

c

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

A) c² + a² + 2ac cos C

B) a² + b² - 2ab cos C

C) a² + b² + 2ab cos A

D) a² - b² + 2ab sin A

b

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

A) 69°

B) 66°

C) 60°

D) 63°

c

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

A) angle A is obtuse

B) angle A is acute

C) angle A is right-angle

D) all of above

d

**MCQ**: The sine rule for a triangle states that

A) a/sin A = b/sin B = c/sin C

B) sin A/a = sin B/b = sin C/c

C) a/sin A + b/sin B + c/sin C

D) 2a/sin A = 2b/sin B = 2c/sin C

b

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