यदि $\tan ^{-1} x+\tan ^{-1} y+\tan ^{-1} z=\frac{\pi}{2}$ है, तो $1-x y-y z-z x$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $0$
  • C
    $-1$
  • D
    $2$

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Similar Questions

यदि $\sin^{-1} x = \theta + \beta$ और $\sin^{-1} y = \theta - \beta$ है,तो $1 + xy = $

यदि $\tan ^{-1}\left(\frac{x+1}{x-1}\right)+\tan ^{-1}\left(\frac{x-1}{x}\right)=\tan ^{-1}(-7)$ है,तो $x$ का मान ज्ञात कीजिए।

$\operatorname{Tan}^{-1} \frac{3}{5} + \operatorname{Tan}^{-1} \frac{6}{41} + \operatorname{Tan}^{-1} \frac{9}{191} = $

$\cot ^{ - 1}\left[ \frac{\sqrt {1 - \sin x} + \sqrt {1 + \sin x}}{\sqrt {1 - \sin x} - \sqrt {1 + \sin x}} \right] = $

मान ज्ञात कीजिए: ${\tan ^{ - 1}}x + {\cot ^{ - 1}}(x + 1)$

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