જો $\sinh ^{-1}(-\sqrt{3})+\cosh ^{-1}(2)=K$ હોય, તો $\cosh K=$

  • A
    $\log (2-\sqrt{3})$
  • B
    $\log (2+\sqrt{3})$
  • C
    $0$
  • D
    $1$

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$\sec ^2(\tan ^{-1} 2) + \operatorname{cosec}^2(\cot ^{-1} 3)$ ની કિંમત શોધો.

સાબિત કરો કે $\sin ^{-1} \frac{12}{13}+\cos ^{-1} \frac{4}{5}+\tan ^{-1} \frac{63}{16}=\pi$

જો $\frac{(x+1)^{2}}{x^{3}+x}=\frac{A}{x}+\frac{B x+C}{x^{2}+1}$ હોય,તો $\operatorname{cosec}^{-1}\left(\frac{1}{A}\right)+\cot ^{-1}\left(\frac{1}{B}\right)+\sec ^{-1} C=$

વિધેય $f(x) = \cos^{-1} \left\{ \frac{1}{\sqrt{13}} (2\cos x - 3\sin x) \right\} + \sin^{-1} \left\{ \frac{1}{\sqrt{13}} (2\cos x + 3\sin x) \right\}$ નું $x = \frac{3}{4}$ આગળ $x$ ની સાપેક્ષે વિકલન શોધો.

જો $\cos ^{-1} x+\cos ^{-1} y+\cos ^{-1} z=3 \pi$ હોય,તો $x(y+z)+y(z+x)+z(x+y)$ ની કિંમત શોધો.

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