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MHT CET202015 Oct 2020Evening ShiftMathematicsTrigonometric Ratios & IdentitiesActual

If A, B, C are angles of a A B C , then 2 A+ 2 B+ 2 C=

Options

  1. A2 A 3 B 2 C
  2. B2 A 2 B 2 C
  3. CA B C
  4. D3 A 2 B 2 C

Correct answer

B. 2 A 2 B 2 C

Step-by-step solution

aligned & In A B C, A+B+C= 2 A+2 B+2 C=2 & 2 A+2 B=2 -2 C (2 A+2 B)= (2 -2 C)=- 2 C & 2 A+ 2 B 1- 2 A 2 B =- 2 C & 2 A+ 2 B=- 2 C(1- 2 A 2 B) & 2 A+ 2 B+ 2 C= 2 A 2 B 2 C aligned

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