समीकरण $\cos^2(x \sin(2x)) + \frac{1}{1+x^2} = \cos^2 x + \sec^2 x$ के वास्तविक हलों $x$ की संख्या है

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    अनंत

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Similar Questions

$\left(4 \cos ^2 \frac{\pi}{20}-1\right)\left(4 \cos ^2 \frac{3 \pi}{20}-1\right)\left(4 \cos ^2 \frac{5 \pi}{20}+1\right)\left(4 \cos ^2 \frac{7 \pi}{20}-1\right)\left(4 \cos ^2 \frac{9 \pi}{20}-1\right)=$

यदि $\tan \theta \cdot \tan \left(120^{\circ}-\theta\right) \tan \left(120^{\circ}+\theta\right)=\frac{1}{\sqrt{3}}$ है,तो $\theta$ का मान ज्ञात कीजिए।

समीकरण $(\sin x - x)(\cos x - x^2) = 0$ के वास्तविक हलों की संख्या है

$\sum_{k=0}^4 \sin^2 \left( (2k+1) \frac{\pi}{20} \right) =$

$\sqrt{3} \csc 20^{\circ} - \sec 20^{\circ} = $

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