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Class 8 Math Placement Tests: Certification Test 64

Cosine Rule Quiz App Download & PDF e-Book - 64

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MCQ: 64

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
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