$0 < \theta < 90$ और $\sec \theta = \operatorname{cosec} 60^\circ$ है,तो $2 \cos^2 \theta - 1$ का मान ........ है।

  • A
    $3$
  • B
    $1$
  • C
    $\frac{3}{4}$
  • D
    $\frac{1}{2}$

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Similar Questions

$\tan \theta + \cot \theta = \ldots \ldots \ldots$

यदि $3 \cot \theta = 4$ है,तो $\frac{1 - \tan^2 \theta}{1 + \tan^2 \theta} = \dots$ ज्ञात कीजिए।

यदि $\sec \theta = \frac{13}{5}$ है,तो $\cos \theta = \ldots \ldots \ldots \ldots$

$2 \sin ^{2} \theta+4 \sec ^{2} \theta+5 \cot ^{2} \theta+2 \cos ^{2} \theta-4 \tan ^{2} \theta-5 \operatorname{cosec}^{2} \theta = \dots$

$(1+\tan ^{2} \theta)(1-\sin \theta)(1+\sin \theta)$ को सरल कीजिए।

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