यदि $x = {\sin ^{ - 1}}(\sin 10)$ और $y = {\cos ^{ - 1}}(\cos 10)$ है,तो $y - x$ का मान ज्ञात कीजिए।

  • A
    $\pi $
  • B
    $7\pi $
  • C
    $0$
  • D
    $10$

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यदि $\frac{a}{b} \tan x > -1$ है,तो $\tan ^{-1}\left[\frac{a \cos x-b \sin x}{b \cos x+a \sin x}\right]$ को सरल कीजिए।

यदि $\theta = \tan^{-1}\left(\frac{1}{3}\right) + \tan^{-1}\left(\frac{1}{7}\right) + \tan^{-1}\left(\frac{1}{13}\right) + \tan^{-1}\left(\frac{1}{21}\right) + \tan^{-1}\left(\frac{1}{31}\right)$,तो $\tan \theta =$

$\cos \left[\sin ^{-1}\left(\frac{3}{5}\right)+\cos ^{-1}\left(\frac{12}{13}\right)\right]=$

यदि ${\tan ^{ - 1}}x - {\tan ^{ - 1}}y = {\tan ^{ - 1}}A$ है,तो $A$ का मान क्या होगा?

$\tan \left[ \cos^{-1} \frac{4}{5} + \tan^{-1} \frac{2}{3} \right] =$

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