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AP EAMCET201823 Apr 2018Evening ShiftMathematicsTrigonometric EquationsActual

If is in the interval (0, 2 ) satisfying the equation 2 ^4 + ^2 =0 , then ^2 =

Options

  1. A1 3
  2. B3 4
  3. C1 2
  4. D2 3

Correct answer

D. 2 3

Step-by-step solution

array lrl Given, 2 ^4 + ^2 =0, (0, / 2) & (1- ^2 ) ^2 + ^2 =0 & ^2 [1- ^2 +1 ]=0 & ^2 =2 & ^2 =2 / 3 array

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