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यदि $\tan ^{2} \theta = \sin ^{2} \theta + \cos ^{2} \theta$ है,तो $\theta = \ldots$ ($^{\circ}$ में)

$2A$ 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)

सिद्ध कीजिए कि $(\sin^{4} \theta - \cos^{4} \theta + 1) \operatorname{cosec}^{2} \theta = 2$.

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

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

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