$\tan ^{-1}\left(\frac{\sin 2-1}{\cos 2}\right)$ का मान है

  • A
    $\frac{\pi}{2}-1$
  • B
    $1-\frac{\pi}{4}$
  • C
    $2-\frac{\pi}{2}$
  • D
    $\frac{\pi}{4}-1$

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मान ज्ञात कीजिए: $\sec^2(\tan^{-1} 2) + \csc^2(\cot^{-1} 3)$

$\sin (\tan^{-1} x)$,जहाँ $|x| < 1$,किसके बराबर है?

$\cos ^{-1}\left(\cos \frac{13 \pi}{6}\right)+\tan ^{-1}\left(\tan \frac{7 \pi}{6}\right)=$ . . . . . . .

वह अंतराल जिसके लिए ${\sin ^{ - 1}}\sqrt x + {\cos ^{ - 1}}\sqrt x = \frac{\pi }{2}$ सत्य है,वह है:

यदि $2 \tan^{-1}(\cos x) = \tan^{-1}(2 \csc x)$ है,तो $\sin x + \cos x = $

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