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

  • A
    $x + y + z - xyz = 0$
  • B
    $x + y + z + xyz = 0$
  • C
    $xy + yz + zx + 1 = 0$
  • D
    $xy + yz + zx - 1 = 0$

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Similar Questions

જો $\tan ^{-1} x + \tan ^{-1} y + \tan ^{-1} z = \frac{\pi}{2}$,જ્યાં $x, y, z > 0$ અને $xy < 1$ હોય,તો $xy + yz + zx$ ની કિંમત શોધો:

જો $y = \cos^{-1}\left( \frac{3\cos x + 4\sin x}{5} \right)$ હોય,તો $\frac{dy}{dx} = $

$\sin \left[3 \sin ^{-1}(0.4)\right] = \ldots$

$\cos \left(\cos ^{-1}\left(-\frac{1}{4}\right)+\sin ^{-1}\left(-\frac{1}{4}\right)\right) = $ . . . . . . .

જો $y = \sec^{-1}\left( \frac{\sqrt{x} + 1}{\sqrt{x} - 1} \right) + \sin^{-1}\left( \frac{\sqrt{x} - 1}{\sqrt{x} + 1} \right)$ હોય,તો $\frac{dy}{dx} = $

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