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यदि $\tan(\pi \sin \theta) = \cot(\pi \cos \theta)$ है,तो $\left| \cot \left( \theta - \frac{\pi}{4} \right) \right|$ का मान क्या है?

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$\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) = $

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

समुच्चय $S = \{x \in R : 2 \cos \left(\frac{x^{2}+x}{6}\right) = 4^{x} + 4^{-x}\}$ में अवयवों की संख्या $.....$ है।

यदि $\sec \theta = m$ और $\tan \theta = n$ है,तो $\frac{1}{m} \left[ m + n + \frac{1}{m + n} \right] = $

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