यदि $\cos ^{-1} \alpha+\cos ^{-1} \beta+\cos ^{-1} \gamma=3 \pi$ है, तो $\alpha(\beta+\gamma)+\beta(\gamma+\alpha)+\gamma(\alpha+\beta)$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $1$
  • C
    $6$
  • D
    $12$

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Similar Questions

$\sin^{-1}(x)$ के सापेक्ष $\tan^{-1} \left( \frac{x}{\sqrt{1 - x^2}} \right)$ का अवकलज क्या है?

यदि $\operatorname{Tan}^{-1} \frac{1}{3}+\operatorname{Tan}^{-1} \frac{1}{7}+\operatorname{Tan}^{-1} \frac{1}{13}+\ldots+\operatorname{Tan}^{-1} \frac{1}{n^2+n+1}=\operatorname{Tan}^{-1} \theta$ है,तो $\theta=$

यदि $y = \tan^{-1}(\sec x^3 - \tan x^3)$ और $\frac{\pi}{2} < x^3 < \frac{3\pi}{2}$ है,तो:

यदि $\sin ^{-1} a=\alpha+\beta$ और $\sin ^{-1} b=\alpha-\beta$ है,तो $\sin ^2 \alpha+\cos ^2 \beta=$ . . . . . . .

यदि $3 \sin ^{-1}\left(\frac{2 x}{1+x^2}\right)-4 \cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right)+2 \tan ^{-1}\left(\frac{2 x}{1-x^2}\right)=\frac{\pi}{3}$ है,तो $x$ का मान ज्ञात कीजिए।

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