$\operatorname{Tan}^{-1} x + \operatorname{Tan}^{-1} 2x = \frac{\pi}{4}$ ના વાસ્તવિક ઉકેલોની સંખ્યા કેટલી છે?

  • A
    $2$
  • B
    $1$
  • C
    $0$
  • D
    અનંત

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Similar Questions

જો $x = \sin \left( 2 \tan^{-1} 2 \right)$ અને $y = \sin \left( \frac{1}{2} \tan^{-1} \frac{4}{3} \right)$ હોય,તો -

જો $\cos ^{-1} x+\cos ^{-1} y+\cos ^{-1} z=3 \pi$ હોય,તો $x(y+z)+y(z+x)+z(x+y)$ ની કિંમત શોધો.

જો $\alpha, \beta, \gamma \neq 0$ હોય અને $\sin ^{-1} \alpha+\sin ^{-1} \beta+\sin ^{-1} \gamma=\pi$ તથા $(\alpha+\beta+\gamma)(\alpha-\gamma+\beta)=3 \alpha \beta$ હોય,તો $\gamma$ ની કિંમત શોધો.

$50 \tan \left(3 \tan ^{-1}\left(\frac{1}{2}\right)+2 \cos ^{-1}\left(\frac{1}{\sqrt{5}}\right)\right)+4 \sqrt{2} \tan \left(\frac{1}{2} \tan ^{-1}(2 \sqrt{2})\right)$ ની કિંમત શોધો.

${\sin ^{ - 1}}\left( {\frac{{2x}}{{1 + {x^2}}}} \right)$ નું ${\cos ^{ - 1}}\left( {\frac{{1 - {x^2}}}{{1 + {x^2}}}} \right)$ ની સાપેક્ષમાં વિકલન શું થાય?

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