Trigonometry Examples

$\frac{\cot (\frac{x}{2}) - \tan (\frac{x}{2})}{\sec (\frac{x}{2}) \csc (\frac{x}{2})}$

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$\frac{\cot (\frac{x}{2}) - \tan (\frac{x}{2})}{\sec (\frac{x}{2}) \csc (\frac{x}{2})}$