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text  If  end text sec space theta plus tan space theta equals 1 then root of the equation left parenthesis a minus 2 b plus c right parenthesis x squared plus left parenthesis b minus 2 c plus a right parenthesis x plus left parenthesis c minus 2 a plus b right parenthesis equals 0

  1. s e c space theta
  2. tan space theta
  3. sin space theta
  4. c o t space theta

The correct answer is: s e c space theta

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