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If ∑∞n=1tan−1(18n2)=kπλ, where k and λ are natural numbers which are coprime, then value of |k−λ| is |
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Answer» If ∑∞n=1tan−1(18n2)=kπλ, where k and λ are natural numbers which are coprime, then value of |k−λ| is |
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