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यदि $A$ और $B$ दो ऐसे कोण हैं कि $A, B \in (0, \pi)$ और वे संपूरक कोण नहीं हैं,तथा $\sin A - \sin B = 0$ है,तो

$\frac{1-2(\cos 60^{\circ}-\cos 80^{\circ})}{2 \sin 10^{\circ}} = \dots$

$(\sin \theta + \cos \theta)(\tan \theta + \cot \theta)$ का मान क्या है?

$\tan 1^\circ \tan 2^\circ \tan 3^\circ \dots \tan 89^\circ$ का मान किसके बराबर है?

$\frac{{\cot^2 15^\circ - 1}}{{\cot^2 15^\circ + 1}} = $

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