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यदि $\tan 15^{\circ}+\frac{1}{\tan 75^{\circ}}+\frac{1}{\tan 105^{\circ}}+\tan 195^{\circ}=2a$ है,तो $\left(a+\frac{1}{a}\right)$ का मान ज्ञात कीजिए:

यदि $\sin x + \sin y = \frac{\sqrt{3}+1}{2}$ और $\cos x + \cos y = \frac{\sqrt{3}-1}{2}$ है,तो $\tan^2 \left(\frac{x-y}{2}\right) + \tan^2 \left(\frac{x+y}{2}\right) = $

$\left(\sin 70^{\circ}\right)\left(\cot 10^{\circ} \cot 70^{\circ}-1\right)$ का मान है

$\tan 9^\circ - \tan 27^\circ - \tan 63^\circ + \tan 81^\circ = $

यदि $A$ और $B$ न्यून कोण हैं जो $3 \cos ^2 A + 2 \cos ^2 B = 4$ और $\frac{3 \sin A}{\sin B} = \frac{2 \cos B}{\cos A}$ को संतुष्ट करते हैं,तो $A + 2B =$ ($^{\circ}$ में)

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