यदि $a=\sin ^{-1}(\sin (5))$ और $b=\cos ^{-1}(\cos (5))$ है,तो $a^2+b^2$ का मान ज्ञात कीजिए।

  • A
    $4 \pi^2+25$
  • B
    $8 \pi^2-40 \pi+50$
  • C
    $4 \pi^2-20 \pi+50$
  • D
    $25$

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यदि $\cos ^{-1}\left(\frac{5}{13}\right)+\cos ^{-1}\left(\frac{3}{5}\right)=\cos ^{-1} x$ है, तो $x$ का मान ज्ञात कीजिए।

$\tan ^{-1}\left[\frac{1}{\sqrt{3}} \sin \frac{5 \pi}{2}\right] + \sin ^{-1}\left[\cos \left(\sin ^{-1} \frac{\sqrt{3}}{2}\right)\right]$ का मान ज्ञात कीजिए।

यदि $x \neq n \pi, x \neq(2 n+1) \frac{\pi}{2}, n \in Z$ है,तो $\frac{\sin ^{-1}(\cos x)+\cos ^{-1}(\sin x)}{\tan ^{-1}(\cot x)+\cot ^{-1}(\tan x)}$ का मान क्या है?

सिद्ध कीजिए कि $3 \sin ^{-1} x = \sin ^{-1}(3 x - 4 x^{3})$,जहाँ $x \in [-\frac{1}{2}, \frac{1}{2}]$.

यदि $(\tan^{-1} x)^2 + (\cot^{-1} x)^2 = \frac{5\pi^2}{8}$ है,तो $x$ =

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