Maths-
General
Easy

Question

In a ΔABC, 2ac sinopen parentheses fraction numerator straight A minus straight B plus straight C over denominator 2 end fraction close parentheses equals

  1. a squared plus b squared minus c squared
  2. c squared plus a squared minus b squared
  3. b squared minus c squared minus a squared
  4. c squared minus a squared minus b squared

The correct answer is: c squared plus a squared minus b squared

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