જો $\tan ^{-1}\left(\frac{x-1}{x-2}\right)+\tan ^{-1}\left(\frac{x+1}{x+2}\right)=\frac{\pi}{4}$ હોય,તો $x$ ની કિંમતો શોધો.

  • A
    $\pm \frac{3}{\sqrt{2}}$
  • B
    $\pm \frac{1}{2}$
  • C
    $\pm \frac{1}{\sqrt{2}}$
  • D
    $\pm \frac{\sqrt{3}}{2}$

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જો $\frac{1}{2} \leq x \leq 1$ હોય, તો $\cos ^{-1} x+\cos ^{-1}\left(\frac{x}{2}+\frac{1}{2} \sqrt{3-3 x^2}\right)$ ની કિંમત શોધો.

$x$ ની સાપેક્ષમાં $\cos^{-1} \left( \sqrt{\frac{1+x}{2}} \right)$ નું વિકલન સહગુણક શું છે?

જો $\sin^{-1}(1 - x) - 2\sin^{-1}x = \pi/2$ હોય,તો $x$ ની કિંમત શોધો:

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જો $\sin ^{-1} x+\sin ^{-1} y+\sin ^{-1} z=\frac{3 \pi}{2}$ હોય, તો $x^{9}+y^{9}+z^{9}-\frac{1}{x^{9} y^{9} z^{9}}$ ની કિંમત કેટલી થાય?

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