यदि $\cot ^{-1}(\alpha)=\cot ^{-1} 2+\cot ^{-1} 8+\cot ^{-1} 18+\cot ^{-1} 32+\ldots$ $100$ पदों तक है,तो $\alpha$ का मान ज्ञात कीजिए।

  • A
    $1.01$
  • B
    $1.00$
  • C
    $1.02$
  • D
    $1.03$

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