11. (sin(π/3) · cos(π/6)) / tg(π/4)

Подставим табличные значения: \(\sin\frac{\pi}{3}=\frac{\sqrt3}{2}\), \(\cos\frac{\pi}{6}=\frac{\sqrt3}{2}\), \( g\frac{\pi}{4}=1\).

\(\frac{\sin\frac{\pi}{3}\cdot\cos\frac{\pi}{6}}{ g\frac{\pi}{4}}=\frac{\frac{\sqrt3}{2}\cdot\frac{\sqrt3}{2}}{1}=\frac34.\)

Ответ: \(\frac34\).