Revert "Optimize: avoid cos -> angle math"
Revert "Optimize: avoid cos -> angle math"

This reverts commit a85943e45e71e0f6fd66562c6ff7f10825087fca.

eyal0/OctoPrint-Slicer,eyal0/OctoPrint-Slicer,kennethjiang/OctoPrint-Slicer,eyal0/OctoPrint-Slicer,DeltaMaker/OctoPrint-Slicer,DeltaMaker/OctoPrint-Slicer,kennethjiang/OctoPrint-Slicer,DeltaMaker/OctoPrint-Slicer,kennethjiang/OctoPrint-Slicer