# Trigonometry and Angle System Reference

make_system< boost::units::angle::degree_base_unit >::type
unit< dimensionless_type, system >
angle degree unit constant
unit< plane_angle_dimension, system >
const plane_angle
const plane_angle
make_system< boost::units::angle::gradian_base_unit >::type
unit< dimensionless_type, system >
angle gradian unit constant
unit< plane_angle_dimension, system >
const plane_angle
const plane_angle
make_system< boost::units::angle::revolution_base_unit >::type
unit< dimensionless_type, system >
angle revolution unit constant
unit< plane_angle_dimension, system >
const plane_angle
const plane_angle