$\tan A = \frac{1}{\sqrt{3}}$ হলে $\sin 3A = কত?$ Barisal • 2023 ক (ক) 0 খ (খ) 1 গ (গ) $\frac{\sqrt{3}}{2}$ ঘ (ঘ) $\frac{1}{\sqrt{3}}$