Question 181
It is considered an equilateral triangle on the side $1$ and center $O$, like the one in the figure.

a lightning part of $O$ and is reflected on all three sides, $\overline{AB}$, $\overline{AC}$ y $\overline{BC}$, (in the given order), until reaching the vertex $A$. Determine the minimum length of the beam stroke. Note: When the beam is reflected on one side, the input angles (incident) and output (reflection) match.

a lightning part of $O$ and is reflected on all three sides, $\overline{AB}$, $\overline{AC}$ y $\overline{BC}$, (in the given order), until reaching the vertex $A$. Determine the minimum length of the beam stroke. Note: When the beam is reflected on one side, the input angles (incident) and output (reflection) match.