\[\sin{110{^\circ}} + \sin{50{^\circ}} =\]
\[= 2\sin\frac{160{^\circ}}{2} \cdot \cos\frac{60{^\circ}}{2} =\]
\[= 2\sin{80{^\circ}} \cdot \cos{30{^\circ}} =\]
\[= 2\sin{80{^\circ}} \cdot \frac{\sqrt{3}}{2} = \sqrt{3}\sin{80{^\circ}}\]