$x \in [-1, 1]$ के लिए $(\sin^{-1} x)^2 + (\cos^{-1} x)^2$ का न्यूनतम मान है:

  • A
    $\frac{\pi^2}{8}$
  • B
    $\frac{3\pi^2}{8}$
  • C
    $\frac{5\pi^2}{8}$
  • D
    $\frac{7\pi^2}{8}$

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$x$ के लिए हल करें: $\tan^{-1}\left(\frac{1-x}{1+x}\right) = \frac{1}{2} \tan^{-1} x$,जहाँ $x > 0$.

सिद्ध कीजिए कि $\frac{9 \pi}{8} - \frac{9}{4} \sin^{-1} \frac{1}{3} = \frac{9}{4} \sin^{-1} \frac{2 \sqrt{2}}{3}$.

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$\tan \left(\cos ^{-1}\left(\frac{4}{5}\right)+\tan ^{-1}\left(\frac{2}{3}\right)\right)$ का मान है

यदि $\cos ^{-1} x+\cos ^{-1} y+\cos ^{-1} z=3 \pi$ है,तो $x^{2025}+x^{2026}+x^{2027}$ का मान क्या है?

${\sin ^{ - 1}}\frac{4}{5} + 2{\tan ^{ - 1}}\frac{1}{3} = $

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