\(\ \left(\frac{d}{d x} \tan ^{-1} \sqrt{\frac{1+\cos \frac{x}{2}}{1-\cos \frac{x}{2}}}\right) \) is equal to
Q1
\(\ \left(\frac{d}{d x} \tan ^{-1} \sqrt{\frac{1+\cos \frac{x}{2}}{1-\cos \frac{x}{2}}}\right) \) is equal to
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