यदि $\tan^{-1} \frac{1}{1+1(2)} + \tan^{-1} \frac{1}{1+2(3)} + \tan^{-1} \frac{1}{1+3(4)} + \dots + \tan^{-1} \frac{1}{1+n(n+1)} = \tan^{-1} \theta$ है,तो $\theta$ =

  • A
    $\frac{n}{n+1}$
  • B
    $\frac{n+1}{n+2}$
  • C
    $\frac{n}{n+2}$
  • D
    $\frac{n-1}{n+2}$

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Similar Questions

$\sum_{i=0}^2 \cot ^{-1}\{-(i+1)\}=$ . . . . . . .

$x > 0$ के लिए, यदि $\sin(\cos^{-1} x + \tan^{-1} x) - \cos(\sin^{-1} x + \tan^{-1} x) = \sin(\cot^{-1} 2)$ है, तो $x =$ का मान क्या है?

यदि $a_1, a_2, a_3, \dots, a_n$ समांतर श्रेणी में हैं जिनका सार्व अंतर $d$ है, तो $\tan [\tan^{-1} (\frac{d}{1 + a_1a_2}) + \tan^{-1} (\frac{d}{1 + a_2a_3}) + \dots + \tan^{-1} (\frac{d}{1 + a_{n-1}a_n})] = $

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:

यदि $\sin ^{-1} \frac{x}{5}+\sin ^{-1} \frac{4}{5}=\frac{\pi}{2}$ है,तो $x=$ . . . . . . .

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