$\tan^{-1} \left( \frac{\cos(\frac{19\pi}{4}) - 1}{\sin(\frac{\pi}{4})} \right)$ ની કિંમત કોના બરાબર છે?

  • A
    $-\frac{\pi}{4}$
  • B
    $-\frac{5\pi}{12}$
  • C
    $-\frac{3\pi}{8}$
  • D
    $-\frac{4\pi}{9}$

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$\tan ^{-1}(1)+\cos ^{-1}\left(-\frac{1}{2}\right)+\sin ^{-1}\left(-\frac{1}{2}\right)$ ની કિંમત શોધો.

$\cos^{-1}\left(x^2 + \frac{1}{x^2} - 1\right) + \sin^{-1}\left(x^2 - \frac{1}{x^2}\right) + \tan^{-1}(x^2)$ ની કિંમત શોધો (જ્યાં $x \in R - \{0\}$)

જો $\sin ^{-1}(4 x)-\cos ^{-1}(3 x)=\frac{\pi}{6}$ હોય, તો $x=$

$\tan ^{-1}\left(\frac{\cos \left(\frac{15 \pi}{4}\right)-1}{\sin \left(\frac{\pi}{4}\right)}\right)$ નું મૂલ્ય કેટલું થાય?

$2 \coth^{-1}(4) + \text{sech}^{-1}\left(\frac{3}{5}\right) = $

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