यदि $\sin(\frac{\pi}{18}) \sin(\frac{5\pi}{18}) \sin(\frac{7\pi}{18}) = K$ है, तो $\sin(\frac{10K\pi}{3})$ का मान ज्ञात कीजिए:

  • A
    $\frac{\sqrt{3}+1}{2\sqrt{2}}$
  • B
    $\frac{\sqrt{3}-1}{\sqrt{2}}$
  • C
    $\frac{\sqrt{3}}{2}$
  • D
    $\frac{1}{2}$

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यदि $\frac{\sec 8\theta - 1}{\sec 4\theta - 1} = \frac{a + b \tan^2 2\theta}{1 + c \tan^2 2\theta + d \tan^4 2\theta}$ (जहाँ $\theta \neq \frac{n\pi}{16}, n \in I$),तो $(a - b + c - d)$ का मान ज्ञात कीजिए।

यदि $\sin 6\theta = 32\cos^5\theta \sin\theta - 32\cos^3\theta \sin\theta + 3x$ है,तो $x = $

यदि $\sin^4 \theta \cos^2 \theta = \sum_{n=0}^{\infty} a_{2n} \cos 2n \theta$ है,तो $n$ का न्यूनतम मान जिसके लिए $a_{2n} = 0$ है,होगा

$\frac{1 + \sin A - \cos A}{1 + \sin A + \cos A} = $

निम्नलिखित में से कौन सी सर्वसमिका सत्य है?

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