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Class 8 Math Learning Guide: Certification Test 305

Cosine Rule Notes App & e-Book: MCQ 305

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MCQ: 305

Considering the Cosine rule, the cos C is equal to

  1. a² - b² - c²⁄2bc
  2. 2a² + 2b² + 2c²⁄2abc
  3. a² + b² - c²⁄2ab
  4. 2a + 2b - 2c⁄2ac
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