यदि $0 < \theta < 90$ और $\sin \theta = \cos 30$ है,तो $2 \tan^2 \theta - 1 = \dots$

  • A
    $5$
  • B
    $4$
  • C
    $3$
  • D
    $0$

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Similar Questions

यदि $2 \sin^{2} \theta - \cos^{2} \theta = 2$ है,तो $\theta$ का मान ज्ञात कीजिए। ($^{\circ}$ में)

$(1+\tan ^{2} \theta)(1-\cos ^{2} \theta) = \dots$

$\Delta ABC$ में,$m \angle B = 90^{\circ}$,$BC = 3$ और $AC = 5$ है,तो $\tan A = \ldots$

$\sin 60^{\circ} \cdot \cos 30^{\circ} + \cos 60^{\circ} \cdot \sin 30^{\circ} = ..........$

$\tan 5^{\circ} \cdot \tan 25^{\circ} \cdot \tan 45^{\circ} \cdot \tan 65^{\circ} \cdot \tan 85^{\circ}$ का मान $\ldots \ldots \ldots \ldots$ है।

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