$\triangle ABC$ 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 $(\cos ^{-1} x)^2-(\sin ^{-1} x)^2 > 0$ है,तो

$\tan \left[2 \tan ^{-1} \frac{1}{5}-\frac{\pi}{4}\right]$ का मान ज्ञात कीजिए।

$(\sin^{-1} x)^3 + (\cos^{-1} x)^3$ का न्यूनतम और अधिकतम मान ज्ञात कीजिए:

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$x=\frac{1}{5}$ 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।

मान ज्ञात कीजिए: $\operatorname{cosec}^{-1}\left[\left(\frac{\tan ^2\left(\frac{\alpha-\pi}{4}\right)-1}{\tan ^2\left(\frac{\alpha-\pi}{4}\right)+1}+\cos \frac{\alpha}{2} \cdot \cot 5 \alpha\right) \sec \frac{11 \alpha}{2}\right]$

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