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Considering the Cosine rule, the cos C is equal to

A. a² - b² - c²⁄2bc

B. 2a² + 2b² + 2c²⁄2abc

C. a² + b² - c²⁄2ab

D. 2a + 2b - 2c⁄2ac

Related Questions on Chapter 7: Trigonometry & Trigonometry Formulas - Math Mcqs for Grade 8