$\frac{\sin{A}}{1 + \cos{A}} + \frac{1 - \cos{A}}{\sin{A}}$

এর মান হচ্ছে-

$\text { } \begin{aligned} \frac{\sin \mathrm{A}}{1+\cos \mathrm{A}}+\frac{1-\cos \mathrm{A}}{\sin \mathrm{A}} & =\frac{2 \sin \mathrm{A} / 2 \cos \mathrm{A} / 2}{2 \cos ^{2} \mathrm{~A} / 2}+\frac{2 \sin ^{2} \mathrm{~A} / 2}{2 \sin \mathrm{A} / 2 \cos \mathrm{A} / 2} \\ & =\tan \mathrm{A} / 2+\tan \mathrm{A} / 2=2 \tan \mathrm{A} / 2 \end{aligned}$