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Class 8 Math Placement Tests: Certification Test 25

Cosine Rule Study App & e-Book: MCQ 25

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MCQ: 25

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
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