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NDA2014MathematicsTrigonometric Ratios & IdentitiesActual

If A + B + C = , then what is ( A + B )+ C equal to?

Options

  1. A0
  2. B2 C
  3. CC- C
  4. D2 C

Correct answer

A. 0

Step-by-step solution

aligned A + B + C & = A + B & = - C ( ~A + B ) & = ( - C ) ( A + B ) & =- C aligned Now, (A+B)+ C=- C+ C=0

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