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Easy

Question

Let S = open curly brackets x element of left parenthesis negative pi comma pi right parenthesis colon x not equal to 0 comma plus-or-minus pi over 2 close curly brackets The sun of all distinct solution of the equation square root of 3 sec space x plus cosec space x plus 2 left parenthesis tan space x minus cot space x right parenthesis equals 0

  1. negative fraction numerator 7 pi over denominator 9 end fraction
  2. negative fraction numerator 2 pi over denominator 9 end fraction
  3. 0
  4. fraction numerator 5 pi over denominator 9 end fraction

The correct answer is: 0

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