$\triangle ABC$ में, यदि $\angle C = \frac{\pi}{2}$ है, तो $\tan^{-1}\left(\frac{a}{b+c}\right) + \tan^{-1}\left(\frac{b}{c+a}\right) + \tan^{-1}\left(\frac{c}{a+b}\right) =$

  • A
    $\tan^{-1}\left(\frac{r_3}{r}\right)$
  • B
    $\tan^{-1}\left(\frac{r_1+r_2}{r_3}\right)$
  • C
    $\tan^{-1}\left(\frac{1}{r}\right)$
  • D
    $\tan^{-1}\left(\frac{r_1+r_2+r_3}{r}\right)$

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Similar Questions

यदि $4 \cos^{-1} x + \sin^{-1} x = \frac{\pi}{2}$ है,तो $x =$ . . . . . . .

$x=\frac{1}{5}$ पर $\cos \left(2 \cos ^{-1} x+\sin ^{-1} x\right)$ का मान ज्ञात कीजिए,जहाँ $0 \leq \cos ^{-1} x \leq \pi$ और $-\frac{\pi}{2} \leq \sin ^{-1} x \leq \frac{\pi}{2}$ है।

$2 \cos ^{-1} x = \sin ^{-1} \left( 2 x \sqrt{1 - x^2} \right)$,$x$ के किन मानों के लिए मान्य है?

यदि $0 < x < \frac{1}{\sqrt{2}}$ और $\frac{\sin ^{-1} x}{\alpha}=\frac{\cos ^{-1} x}{\beta}$ है,तो $\sin \left(\frac{2 \pi \alpha}{\alpha+\beta}\right)$ का मान $......$ है।

यदि $\tan^{-1} \left[ \frac{\sqrt{5} - 2\sqrt{6}}{1 + \sqrt{6}} \right] = \frac{\pi}{3} - \tan^{-1}(k)$ है, तो $\sec^{-1}(k) = \dots$

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