$2\cos^2 \theta - 2\sin^2 \theta = 1$,तो $\theta = \dots \dots ^\circ$

  • A
    $15$
  • B
    $30$
  • C
    $45$
  • D
    $60$

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यदि $\tan \theta - \cot \theta = 0$ और $\theta$ एक धनात्मक न्यून कोण है,तो $\frac{\tan (\theta + 15^{\circ})}{\tan (\theta - 15^{\circ})}$ का मान क्या है?

यदि $\tan \theta \cdot \tan 2 \theta = 1$ है,तो $\sin ^{2} 2 \theta + \tan ^{2} 2 \theta$ का मान ज्ञात कीजिए।

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$\frac{\sin \theta + \sin 2\theta }{1 + \cos \theta + \cos 2\theta } = $

यदि $7 \sin a = 24 \cos a$ है,तो $14 \tan a - 75 \cos a - 7 \sec a$ का मान ज्ञात कीजिए:

यदि $\cos \alpha = \frac{2 \cos \beta - 1}{2 - \cos \beta}$ है,तो $\tan \frac{\alpha}{2} \cot \frac{\beta}{2}$ का मान ज्ञात कीजिए,जहाँ $(0 < \alpha < \pi$ और $0 < \beta < \pi)$ है।

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