यदि $x \cos \theta = y \cos \left(\theta + \frac{2 \pi}{3}\right) = z \cos \left(\theta + \frac{4 \pi}{3}\right)$ है,तो $\frac{1}{x} + \frac{1}{y} + \frac{1}{z} = $

  • A
    $1$
  • B
    $2$
  • C
    $0$
  • D
    $3$

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$\sin 15^\circ + \cos 105^\circ = $

यदि $\sec \theta = \frac{13}{12}$ और $\theta$ चौथे चतुर्थांश ($4^{\text{th}}$ quadrant) में स्थित है,तो $\tan \theta \times \operatorname{cosec} \theta \times \sin \theta \times \cos \theta = $

निम्नलिखित डिग्री माप के संगत रेडियन माप ज्ञात कीजिए: $-47^{\circ} 30^{\prime}$.

यदि $\operatorname{cosech} x = \frac{4}{5}$ है,तो $\sinh x = $

यदि $\sin x = -\frac{3}{5}$,जहाँ $\pi < x < \frac{3\pi}{2}$ है,तो $80(\tan^2 x - \cos x)$ का मान ज्ञात कीजिए:

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