Level:
Project ID:
1103018904
Accepted:
1
Clonable:
0
Easy:
0
In the cube \( ABCDEFGH \), let \( S_{FG} \) be the midpoint of the edge \( FG \). Find the angle between the lines \( BS_{FG} \) and \( BF \). Round the result to two decimal places.
\( 26.57^{\circ} \)
\( 22.5^{\circ} \)
\( 45^{\circ} \)
\( 54.74^{\circ} \)