VectorPolarAngle
The VectorPolarAngle function accepts 1 parameter, which is the name of a 2D vector. This function must be placed after the $Vector2D directive that identifies a vector variable.
The function returns the angle between the positive x-direction and the vector. The angle is based on the right-hand horizontal reference direction with a positive value being measured counter-clockwise. The function returns a value between -pi and +pi (or -180 deg to +180 deg) depending on the setting of the unit system for angles set with the Unit System command or the $UnitSystem directive.
Example:
$Vector2D V
$UnitSystem deg
V=VectorAssign(-1.5,-0.75) [N]
ang=VectorPolarAngle(V)
{Solution:
ang=-153.4 [deg]}
See also: VectorAngle_x