જો ${\tan ^{ - 1}}\frac{{1 - x}}{{1 + x}} = \frac{1}{2}{\tan ^{ - 1}}x$ હોય,તો $x = $

  • A
    $1$
  • B
    $\sqrt{3}$
  • C
    $\frac{1}{\sqrt{3}}$
  • D
    આમાંથી કોઈ નહીં

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સમીકરણ $\sin^{-1} x = 2\tan^{-1} x$ નો ઉકેલ ગણ શોધો.

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જો $A=2 \tan ^{-1}\left(\frac{1+x}{1-x}\right)$ અને $B=\cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right)$,જ્યાં $x \in(0,1)$,તો $A-B=$

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