cot A = x + 1/x: find cosec^2 A

1. A.
   $x^2 + \frac{1}{x^2} + 1$
2. B.
   $x^2 + \frac{1}{x^2} + 2$
3. C.
   $x^2 + \frac{1}{x^2} + 3$
4. D.
   $x^2 + \frac{1}{x^2} + 4$

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1. A.
   $x^2 + \frac{1}{x^2} + 1$
2. B.
   $x^2 + \frac{1}{x^2} + 1$
3. C.
   $x^2 + \frac{1}{x^2} + 3$
4. D.
   $x^2 + \frac{1}{x^2} - 1$

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1. A.
   $x^2 + \frac{1}{x^2} + 3$
2. B.
   $x^2 + \frac{1}{x^2}$
3. C.
   $x + \frac{1}{x}$
4. D.
   $x^2 + \frac{1}{x^2} - 2$

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