The maximum segment angle of the sweep in radians. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
Remarks
 This property is used to retrieve/set the maximum segment angle of the sweep. It is settable only when the trajectory segmentation is enabled.