Let a1=1,a2,a3,a4,….. be consecutive natural numbers. Then tan−1(1+a1a21)+tan−1(1+a2a31) +…..+tan−1(1+a2021a20221) is equal to
Held on 30 Jan 2023 · Verified 6 Jul 2026.
4π−cot−1(2022)
cot−1(2022)−4π
tan−1(2022)−4π
4π−tan−1(2022)
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