यदि $\sinh u = \tan \theta$ है,तो $\cosh u$ किसके बराबर है?

  • A
    $-\sec \theta$
  • B
    $\sec \theta$
  • C
    $\sin \theta$
  • D
    $\cot \theta$

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मान लीजिए $A = \{x \in R : |\sqrt{3} \cos x - \sin x| \geq 2, 0 \leq x \leq 2\pi\}$ है। यदि $x_1 \in A$ और $x_2 \in A$ है,तो $\frac{x_1}{x_2}$ का संभावित मान ज्ञात कीजिए।

मान ज्ञात कीजिए: $\cos \frac{\pi}{7} \cos \frac{2 \pi}{7} \cos \frac{3 \pi}{7} \cos \frac{\pi}{14} \cos \frac{3 \pi}{14} \cos \frac{5 \pi}{14}$

$\left( {1 + \cos \frac{\pi }{8}} \right)\,\left( {1 + \cos \frac{{3\pi }}{8}} \right)\,\left( {1 + \cos \frac{{5\pi }}{8}} \right)\,\left( {1 + \cos \frac{{7\pi }}{8}} \right) = $

मान लीजिए $\frac{\pi}{2} < \theta < \pi$ और $\cot \theta = -\frac{1}{2 \sqrt{2}}$ है। तब $\sin (\frac{15 \theta}{2}) (\cos 8 \theta + \sin 8 \theta) + \cos (\frac{15 \theta}{2}) (\cos 8 \theta - \sin 8 \theta)$ का मान ज्ञात कीजिए:

यदि $\sin x + \sin^2 x = 1$ है,तो $\cos^8 x + 2\cos^6 x + \cos^4 x = $

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