$alpha = arccos left( rac{vec{a} cdot vec{b}}{|vec{a}| cdot |vec{b}|} ight)$
$alpha = arctan left( rac{vec{a} cdot vec{b}}{|vec{a}| cdot |vec{b}|} ight)$
Baroque art features strong contrasts, while Rococo art prefers more subtle transitions
Baroque art is generally larger in scale than Rococo art