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

यदि $\sec \theta + \tan \theta = p$ है,तो $\tan \theta$ का मान क्या होगा?

यदि $\tan 15^{\circ}+\frac{1}{\tan 75^{\circ}}+\frac{1}{\tan 105^{\circ}}+\tan 195^{\circ}=2a$ है,तो $\left(a+\frac{1}{a}\right)$ का मान ज्ञात कीजिए:

$\cos^3 110^{\circ} + \cos^3 10^{\circ} + \cos^3 130^{\circ} = $

मान लीजिए $f_k(x) = \frac{1}{k}(\sin^k x + \cos^k x)$ जहाँ $x \in R$ और $k \ge 1$ है। तो $f_4(x) - f_6(x)$ का मान ज्ञात कीजिए।

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