الف) $\sin^2(30^{\circ}) + \sin^2(60^{\circ}) =$

ب) $8 \sin^2(45^{\circ}) - 2 \cos(45^{\circ}) + \tan(45^{\circ}) = \sqrt{2} \cot(30^{\circ}) + \tan(45^{\circ}) - \cot(45^{\circ}) =$

ج) $\frac{\sqrt{2} \sin(45^{\circ}) - 7 \tan(45^{\circ}) + \cos(0^{\circ})}{\cot^2(30^{\circ}) + 2 \cos(45^{\circ}) + 5 \sin(90^{\circ})} =$

د) $\frac{3 \sin^2(30^{\circ}) + \cos^2(30^{\circ})}{1 - \tan^2(45^{\circ}) + \cot^2(45^{\circ})} =$

هـ) $\frac{\frac{1}{2} \sin^2(90^{\circ}) + 5 \cot(45^{\circ}) + 7}{6 \cos(90^{\circ}) + 3 \tan^2(45^{\circ}) + \cot^2(30^{\circ})} =$