Вычислите (cos59°*cos29°+sin59°*sin29°)/(sin73°*cos47°+sin47°*cos73°).

\[= \frac{\cos(59{^\circ} - 29{^\circ})}{\sin(73{^\circ} + 47{^\circ})\ } = \frac{\cos{30{^\circ}}}{\sin{120{^\circ}}} =\]

\[= \frac{\sqrt{3}}{2}\ :\frac{\sqrt{3}}{2} = 1\]