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COMEDK2012MathematicsTrigonometric Ratios & Identities

If =2 , then ( + ) ( - ) is equal to

Options

  1. A3
  2. B2 3
  3. C1 3

Correct answer

C. 1 3

Step-by-step solution

We have, =2 aligned & Now, ( + ) ( - ) = - + &= -1 +1 = 2-1 2+1 = 1 3 aligned

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