$(\tan 1^{\circ} \tan 2^{\circ} \tan 3^{\circ} \ldots \tan 89^{\circ})$ का मान है

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $\frac{1}{2}$

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$\Delta ABC$ में, $AC = 5$, $BC = 13$, $m \angle A = 90^\circ$ है, तो $\tan B = \ldots$

$2A$ एक न्यून कोण का माप है और $\sec 2A = \operatorname{cosec}(A - 42^\circ)$ है,तो $A$ का मान $\ldots \ldots \ldots \ldots$ है। ($^\circ$ में)

यदि $\sin \theta + \cos \theta = p$ और $\sec \theta + \operatorname{cosec} \theta = q$ है,तो सिद्ध कीजिए कि $q(p^2 - 1) = 2p$.

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$\frac{\sin 60^{\circ} + \cos 30^{\circ}}{1 + \sin 30^{\circ} + \cos 60^{\circ}} = \dots$

यदि $4 \tan \theta = 3$ है,तो $\left(\frac{4 \sin \theta - \cos \theta}{4 \sin \theta + \cos \theta}\right)$ का मान ज्ञात कीजिए।

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