The sum \sum_\limits{n=1}^{\infty}  \tan^{-1}\left(\dfrac{2}{n^2}\ | Filo
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Inverse Trigonometric Functions

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The sum \sum_\limits{n=1}^{\infty}  \tan^{-1}\left(\dfrac{2}{n^2}\right) equals .Find

  1. 4
Correct Answer: Option(a)
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