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AP EAMCET2008MathematicsTrigonometric Ratios & Identities

If + ( + 3 )+ ( + 2 3 )=3 , then which of the following is equal to 1 ?

Options

  1. A2
  2. B3
  3. C^2
  4. D^3

Correct answer

B. 3

Step-by-step solution

Given, aligned & + ( + 3 )+ ( + 2 3 )=3 & + + 3 1- 3 + - 3 1+ 3 =3 & + 8 1-3 ^2 =3 & 9 -3 ^3 1-3 ^2 =3 & 3 3 =3 3 =1 & aligned Hence, option (2) is correct.

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