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

$|x| < \frac{1}{\sqrt{2}}, x \neq 0$ માટે $\tan ^{-1}\left(\frac{\sqrt{1+x^2}+\sqrt{1-x^2}}{\sqrt{1+x^2}-\sqrt{1-x^2}}\right)$ ની કિંમત શોધો.

$\operatorname{cosec}^{-1}(\sqrt{2})+\cos ^{-1}\left(\frac{-1}{2}\right)-\sec ^{-1}\left(\frac{2}{\sqrt{3}}\right)$ નું મૂલ્ય કેટલું થાય?

ધારો કે $f(\theta) = \sin ( \tan ^{-1} ( \frac{\sin \theta}{\sqrt{\cos 2 \theta}} ) )$,જ્યાં $-\frac{\pi}{4} < \theta < \frac{\pi}{4}$,તો $\frac{d}{d(\tan \theta)}(f(\theta))$ નું મૂલ્ય શોધો.

સાબિત કરો કે $3 \sin ^{-1} x = \sin ^{-1}(3 x - 4 x^{3})$,જ્યાં $x \in [-\frac{1}{2}, \frac{1}{2}]$.

જો $\cos^{-1}\left(\frac{x}{a}\right) + \cos^{-1}\left(\frac{y}{b}\right) = \alpha$ હોય,તો $\frac{x^2}{a^2} - \frac{2xy}{ab}\cos \alpha + \frac{y^2}{b^2} = $

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