यदि $\cos \theta, \sin \theta$ और $\cot \theta$ गुणोत्तर श्रेणी में हैं,तो $\sin ^9 \theta+\sin ^6 \theta+3 \sin ^5 \theta+\sin ^3 \theta+\sin ^2 \theta=$

  • A
    $2$
  • B
    $7$
  • C
    $1$
  • D
    $5$

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समीकरण $\frac{3 \cos 2x + \cos^3 2x}{\cos^6 x - \sin^6 x} = x^3 - x^2 + 6$ के हलों $x \in R$ का योग क्या है?

यदि $\operatorname{cosec} \theta = \frac{p+q}{p-q}$ है,तो $\cot \left(\frac{\pi}{4} + \frac{\theta}{2}\right)$ का मान ज्ञात कीजिए।

$\cos(18^{\circ}-A) \cdot \cos(18^{\circ}+A) - \cos(72^{\circ}-A) \cdot \cos(72^{\circ}+A)$ का मान ज्ञात कीजिए।

यदि $\pi < \alpha < \frac{3\pi}{2}$ है,तो $\sqrt{\frac{1 - \cos \alpha}{1 + \cos \alpha}} + \sqrt{\frac{1 + \cos \alpha}{1 - \cos \alpha}} = $

यदि $\tan A = \tan \alpha \coth x = \cot \beta \tanh x$ है,तो $\tan (\alpha + \beta) =$

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