यदि $\tan \theta \cdot \tan \left(120^{\circ}-\theta\right) \tan \left(120^{\circ}+\theta\right)=\frac{1}{\sqrt{3}}$ है,तो $\theta$ का मान ज्ञात कीजिए।

  • A
    $\frac{n \pi}{3}+\frac{\pi}{18}, n \in Z$
  • B
    $\frac{n \pi}{3}+\frac{\pi}{12}, n \in Z$
  • C
    $\frac{n \pi}{12}+\frac{\pi}{12}, n \in Z$
  • D
    $\frac{n \pi}{3}+\frac{\pi}{6}, n \in Z$

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यदि $\theta$ एक न्यून कोण है और $2 \sin ^2 \theta = \cos ^4 \frac{\pi}{8} + \sin ^4 \frac{3 \pi}{8} + \cos ^4 \frac{5 \pi}{8} + \sin ^4 \frac{7 \pi}{8}$ है,तो $\theta =$

यदि $\sec \theta \cosh y = \operatorname{cosec} x$ और $\operatorname{cosec} \theta \sinh y = \sec x$ है,तो $\sinh ^2 y =$

$\sin ^3 10^{\circ}+\sin ^3 50^{\circ}-\sin ^3 70^{\circ}=$

यदि $a \cos^3 \alpha + 3a \cos \alpha \sin^2 \alpha = m$ और $a \sin^3 \alpha + 3a \cos^2 \alpha \sin \alpha = n$ है,तो $(m + n)^{2/3} + (m - n)^{2/3}$ का मान ज्ञात कीजिए:

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यदि $2 \sinh^{-1}\left(\frac{a}{\sqrt{1-a^2}}\right)=\log \left(\frac{1+x}{1-x}\right)$ है,तो $x$ का मान ज्ञात कीजिए।

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