$\tan ^{-1}\left(\frac{x}{y}\right)-\tan ^{-1}\left(\frac{x-y}{x+y}\right)$ (જ્યાં,$x, y>0$) નું મૂલ્ય શું છે?

  • A
    $\frac{\pi}{4}$
  • B
    $-\frac{\pi}{4}$
  • C
    $\frac{\pi}{2}$
  • D
    $-\frac{\pi}{2}$

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$2 \pi - \left(\sin ^{-1} \frac{4}{5} + \sin ^{-1} \frac{5}{13} + \sin ^{-1} \frac{16}{65}\right)$ ની કિંમત શોધો.

$\cot \left(\sum\limits_{n=1}^{50} \tan ^{-1}\left(\frac{1}{1+n+n^{2}}\right)\right)$ ની કિંમત શોધો.

$\sec(\text{cosec}^{-1}x)$ એ કોના બરાબર છે?

$\tan^{-1} \left[ \frac{\sqrt{1+x^2} + \sqrt{1-x^2}}{\sqrt{1+x^2} - \sqrt{1-x^2}} \right] = $

જો $4 \sin ^{-1} x + 6 \cos ^{-1} x = 3 \pi$ હોય,તો $x = \ldots$.

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