જો $\tan ^{-1}\left(\frac{x}{2}\right)+\tan ^{-1}\left(\frac{y}{2}\right)+\tan ^{-1}\left(\frac{z}{2}\right)=\frac{\pi}{2}$ હોય,તો $x y+y z+z x=$

  • A
    $0$
  • B
    $2$
  • C
    $-1$
  • D
    $4$

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Similar Questions

$\tan \frac{1}{2} \left[ \sin^{-1} \frac{2x}{1+x^2} + \cos^{-1} \frac{1-y^2}{1+y^2} \right]$ ની કિંમત શોધો,જ્યાં $|x | < 1, y>0$ અને $xy < 1$ છે.

જો $\frac{(x+1)^{2}}{x^{3}+x}=\frac{A}{x}+\frac{Bx+C}{x^{2}+1}$ હોય,તો $\sin^{-1} A + \tan^{-1} B + \sec^{-1} C$ ની કિંમત શોધો.

જો $\theta = \tan^{-1} a$,$\phi = \tan^{-1} b$ અને $ab = -1$ હોય,તો $\theta - \phi = $

જો $\cos ^{-1}\left(\frac{5}{13}\right)+\cos ^{-1}\left(\frac{3}{5}\right)=\cos ^{-1} x$ હોય,તો $x$ ની કિંમત શોધો.

$\frac{d}{dx}(\sin^{-1}(3x - 4x^3)) = $

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