If \(\sum_{n=1}^{\infty}\cot ^{-1}(\frac{n^2}{8})\)=\(\frac{a}{b}\pi\) where a/b is a rational number in its lowest form, then correct options is/area) a-b=3b) a+b=11c)a+b=10d) a-b=4

If \(\sum_{n=1}^{\infty}\cot ^{-1}(\frac{n^2}{8})\)=\(\frac{a}{b}\pi\

1.	If \(\sum_{n=1}^{\infty}\cot ^{-1}(\frac{n^2}{8})\)=\(\frac{a}{b}\pi\) where a/b is a rational number in its lowest form, then correct options is/area) a-b=3b) a+b=11c)a+b=10d) a-b=4
Answer» Answer: a) a-b=3

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If \(\sum_{n=1}^{\infty}\cot ^{-1}(\frac{n^2}{8})\)=\(\frac{a}{b}\pi\) where a/b is a rational number in its lowest form, then correct options is/area) a-b=3b) a+b=11c)a+b=10d) a-b=4

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