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AP EAMCET2006MathematicsTrigonometric Ratios & Identities

For all values of , the values of 3- + ( + 3 ) lie in the interval :

Options

  1. A[-2,3]
  2. B[-2,1]
  3. C[2,4]
  4. D[1,5]

Correct answer

C. [2,4]

Step-by-step solution

3- + ( + 3 )=3- + 3 - 3 =3- + 1 2 - 3 2 =3- 1 2 - 3 2 =3- [ 6 + 6 ]=3- ( + 6 ) Since -1 1 The value of expression lies in [2,4] .

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