यदि $\theta = \cot^{-1}(7) + \cot^{-1}(8) + \cot^{-1}(18)$ है,तो $\cot \theta$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $3$
  • C
    $4$
  • D
    $1$

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Similar Questions

$\frac{d}{dx}(\sin^{-1}(3x - 4x^3)) = $

$\cot \left[\sum_{n=3}^{32} \cot ^{-1}\left(1+\sum_{k=1}^n 2 k\right)\right]=$

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

मान लीजिए $\tan ^{-1}\left(\tan \frac{5 \pi}{4}\right) = \alpha$ और $\tan ^{-1}\left(-\tan \frac{2 \pi}{3}\right) = \beta$ है। तो:

$x > 0$ के लिए $\tan ^{-1} \frac{1-x}{1+x}=\frac{1}{2} \tan ^{-1} x$ को हल करें।

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