यदि $3 \sin \theta + 5 \cos \theta = 5$ है,तो $5 \sin \theta - 3 \cos \theta$ का मान क्या होगा?

  • A
    $\pm 3$
  • B
    $\pm 5$
  • C
    $\pm 2$
  • D
    $\pm 1$

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$\sqrt{\frac{1+\cos \theta}{1-\cos \theta}}+\sqrt{\frac{1-\cos \theta}{1+\cos \theta}}=$

यदि $\tan x = \frac{b}{a}$ है,तो $\sqrt {\frac{{a + b}}{{a - b}}} + \sqrt {\frac{{a - b}}{{a + b}}} = $

यदि $\sin 2\theta + \sin 2\phi = 1/2$ और $\cos 2\theta + \cos 2\phi = 3/2$ है,तो $\cos^2(\theta - \phi) = $

यदि $\tan \alpha$,असमिका $4x^2 - 16x + 15 < 0$ का पूर्णांक हल है और $\cos \beta$ प्रथम चतुर्थांश के समद्विभाजक की ढाल के बराबर है,तो $\sin(\alpha + \beta)\sin(\alpha - \beta)$ का मान ज्ञात कीजिए।

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

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