$\operatorname{sech}^{-1}\left(\frac{1}{\sqrt{2}}\right)+\operatorname{cosech}^{-1}(-1)=$

  • A
    $0$
  • B
    $\sqrt{2}+1$
  • C
    $\sqrt{2}$
  • D
    $\sqrt{2}-1$

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વિકલ વિધેયના મુખ્ય મૂલ્યોને ધ્યાનમાં લેતા,ગણ $A = \{x \geq 0 \mid \tan^{-1} x + \tan^{-1} 6x = \frac{\pi}{4}\}$

$\sin ^{-1}\left(\sin \frac{23 \pi}{6}\right) = $ . . . . . . .

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જો $x + \frac{1}{x} = 2$ હોય,તો $\sin^{-1} x$ નું મુખ્ય મૂલ્ય શું થાય?

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