यदि $\sec \theta - \tan \theta = \frac{a+1}{a-1}$ है,तो $\cos \theta =$

  • A
    $\frac{a^{2}+1}{a^{2}-1}$
  • B
    $\frac{a^{2}-1}{a^{2}+1}$
  • C
    $\frac{2a}{a^{2}+1}$
  • D
    $\frac{2a}{a^{2}-1}$

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यदि $x = \operatorname{cosec} \theta - \sin \theta$ और $y = \sec \theta - \cos \theta$ है,तो $x$ और $y$ के बीच का संबंध क्या है?

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यदि $\frac{\pi}{2} < \alpha < \pi$ और $\pi < \beta < \frac{3\pi}{2}$,जहाँ $\sin \alpha = \frac{15}{17}$ और $\tan \beta = \frac{12}{5}$ है,तो $\sin(\beta - \alpha)$ का मान ज्ञात कीजिए। ($/221$ में)

$\frac{{\tan A + \sec A - 1}}{{\tan A - \sec A + 1}} = $

$\cos 24^{\circ} + \cos 55^{\circ} + \cos 125^{\circ} + \cos 204^{\circ} + \cos 300^{\circ}$ का मान है

यदि $y = 3\,\sin\,x + 4\,\cos\,x$ है,तो $y$ का अधिकतम मान ज्ञात कीजिए।

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