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Question

cosec squared space alpha equals fraction numerator 4 x y over denominator left parenthesis x plus y right parenthesis squared end fraction left square bracket left parenthesis x comma y right parenthesis not equal to left parenthesis 0 comma 0 right parenthesis right square bracket text  is  end text

  1. Possible for x equals y
  2. Impossible for x equals y
  3. Not possible
  4. Possible for x equals negative y

The correct answer is: Possible for x equals y


    cosec squared space alpha equalsfraction numerator 4 x y over denominator left parenthesis x plus y right parenthesis squared end fraction left square bracket left parenthesis x comma y right parenthesisnot equal to left parenthesis 0 comma 0 right parenthesis right square bracket text  is  end textpossible for x=y.
    Hence, option(d) is the correct answer.

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