यदि $\tan^{-1} x + \tan^{-1} y = \frac{\pi}{4}$ है,तो:

  • A
    $x + y - xy = 1$
  • B
    $x + y + xy = 1$
  • C
    $x + y + xy + 1 = 0$
  • D
    $x + y - xy + 1 = 0$

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Similar Questions

यदि $\sin^{-1} \frac{3}{5} + \cos^{-1} \frac{12}{13} = \sin^{-1} C$ है,तो $C =$

$\lim _{x \rightarrow 0^{+}} \frac{x \sin ^{-1}\left(\frac{2 x}{1+x^2}\right)}{\cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right) \tan ^{-1}\left(\frac{3 x-x^3}{1-3 x^2}\right)}$ का मान ज्ञात कीजिए।

यदि $4 \sin ^{-1} x + 6 \cos ^{-1} x = 3 \pi$ है,तो $x = \ldots$.

$\cos \left(\sin ^{-1} \frac{3}{5}+\sin ^{-1} \frac{5}{13}+\sin ^{-1} \frac{33}{65}\right) = . . . . .$

$\tan \left(\cos ^{-1}\left(\frac{4}{5}\right)+\tan ^{-1}\left(\frac{2}{3}\right)\right)$ का मान है

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