यदि $\tan \theta = \frac{p}{q}$ है,तो $\frac{p \sin \theta - q \cos \theta}{p \sin \theta + q \cos \theta} = $

  • A
    $\frac{p^2 + q^2}{p^2 - q^2}$
  • B
    $\frac{p^2 - q^2}{p^2 + q^2}$
  • C
    $\frac{p^2 + q^2}{p^2 - q^2}$
  • D
    इनमें से कोई नहीं

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यदि $\cos \theta = \frac{8}{17}$ और $\theta$ प्रथम चतुर्थांश ($1^{st}$ quadrant) में स्थित है,तो $\cos (30^\circ + \theta) + \cos (45^\circ - \theta) + \cos (120^\circ - \theta)$ का मान ज्ञात कीजिए।

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