સમીકરણ $\tan ^{-1} x+\tan ^{-1} 2 x=\frac{\pi}{4}$ નું સમાધાન કરતી $x$ ની વાસ્તવિક કિંમત છે

  • A
    $\frac{-3 \pm \sqrt{17}}{4}$
  • B
    $-1 \pm \sqrt{3}$
  • C
    $\sqrt{3}-1$
  • D
    $\frac{\sqrt{17}-3}{4}$

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$\cot \left(\operatorname{cosec}^{-1} \frac{5}{3}+\tan ^{-1} \frac{2}{3}\right)$ નું મૂલ્ય શોધો.

જો $\cot ^{-1}(\alpha)=\cot ^{-1} 2+\cot ^{-1} 8+\cot ^{-1} 18+\cot ^{-1} 32+\ldots$ $100$ પદો સુધી હોય,તો $\alpha$ ની કિંમત શોધો.

જો $\cos ^{-1} x+\cos ^{-1} y+\cos ^{-1} z=\pi$ અને $x^2+y^2+z^2+k x y z=1$ હોય,તો $k$ ની કિંમત શોધો.

$\sin^{-1} x + \cos^{-1} x$ ની કિંમત શું થાય?

$\cos ^{-1}\left\{\frac{1}{\sqrt{2}}\left(\cos \frac{9 \pi}{10}-\sin \frac{9 \pi}{10}\right)\right\}$ નું મૂલ્ય શોધો.

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