$\operatorname{cosec} 48^{\circ}+\operatorname{cosec} 96^{\circ}+\operatorname{cosec} 192^{\circ}+\operatorname{cosec} 384^{\circ}=$

  • A
    $4 \sqrt{3}$
  • B
    $-4 \sqrt{3}$
  • C
    $0$
  • D
    $1$

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Similar Questions

$\sum\limits_{r = 1}^{89} {{\log _3}(\tan {r^o})} = $

Difficult
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सभी संभावित त्रिकों $(a_1, a_2, a_3)$ की संख्या ज्ञात कीजिए ताकि सभी $x$ के लिए $a_1 + a_2 \cos 2x + a_3 \sin^2 x = 0$ हो।

$\sin^6 \theta + \cos^6 \theta + 3 \sin^2 \theta \cos^2 \theta = $

यदि $\tan \left(\frac{\pi}{9}\right), x, \tan \left(\frac{7 \pi}{18}\right)$ समांतर श्रेणी में हैं और $\tan \left(\frac{\pi}{9}\right), y, \tan \left(\frac{5 \pi}{18}\right)$ भी समांतर श्रेणी में हैं,तो $|x-2 y|$ का मान ज्ञात कीजिए:

यदि $\sin 2\theta + \sin 2\phi = 1/2$ और $\cos 2\theta + \cos 2\phi = 3/2$ है,तो $\cos^2(\theta - \phi) = $

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