$k$ ના તમામ મૂલ્યોનો ગણ જેના માટે $(\tan^{-1} x)^3 + (\cot^{-1} x)^3 = k \pi^3$,$x \in \mathbb{R}$,એ અંતરાલ છે

  • A
    $[\frac{1}{32}, \frac{7}{8})$
  • B
    $(\frac{1}{24}, \frac{13}{16})$
  • C
    $[\frac{1}{48}, \frac{13}{16}]$
  • D
    $[\frac{1}{32}, \frac{9}{8})$

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જો $\sin^{-1} x + \sin^{-1} y + \sin^{-1} z = \frac{3\pi}{2}$ હોય,તો $x^{100} + y^{100} + z^{100} - \frac{9}{x^{101} + y^{101} + z^{101}}$ ની કિંમત શોધો.

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જો $\alpha$ અને $\beta$ પ્રથમ ચરણમાં એવા ખૂણાઓ હોય કે જેથી $\tan \alpha = \frac{1}{7}$ અને $\sin \beta = \frac{1}{\sqrt{10}}$,તો $\alpha + 2\beta =$ ($^{\circ}$ માં)

જો $\tan ^{-1} a+\tan ^{-1} b+\tan ^{-1} c=\pi$ હોય,તો નીચેનામાંથી કયું સાચું છે?

$\tan ^{-1}\left(\frac{1}{3}\right)+\tan ^{-1}\left(\frac{1}{5}\right)+\tan ^{-1}\left(\frac{1}{7}\right)+\tan ^{-1}\left(\frac{1}{8}\right)$ નું મૂલ્ય શોધો.

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 $x y+y z+z x=$

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