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Maths-

In straight capital delta A B C, cot A plus cot invisible function application B plus cot invisible function application C equals

Maths-General

  1. fraction numerator a plus b plus c over denominator 4 straight capital delta end fraction
  2. fraction numerator a squared plus b squared plus c squared over denominator 4 straight capital delta end fraction
  3. fraction numerator left parenthesis a plus b plus c right parenthesis squared over denominator 4 straight capital delta end fraction
  4. fraction numerator left parenthesis a plus b plus c right parenthesis squared over denominator 2 straight capital delta end fraction

    Answer:The correct answer is: fraction numerator a squared plus b squared plus c squared over denominator 4 straight capital delta end fraction

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