public static AngularUnit Degrees {get;}

{
  // convert 45 degrees to radians
  double radians = AngularUnit.Degrees.ConvertToRadians(45);

  // convert PI to degrees
  double degrees = AngularUnit.Degrees.ConvertFromRadians(Math.PI);
}

{
  try
  {
    // create a Grad unit
    var grad = AngularUnit.CreateAngularUnit(9105);
    string unitName = grad.Name;                        // Grad
    double conversionFactor = grad.ConversionFactor;    // 0.015708
    double radiansPerUnit = grad.RadiansPerUnit;
    int factoryCode = grad.FactoryCode;                 // 9105

    // convert 10 grads to degrees
    double val = grad.ConvertTo(10, AngularUnit.Degrees);

    // convert 10 radians to grads
    val = grad.ConvertFromRadians(10);
  }
  catch (ArgumentException)
  {
    // ArgumentException will be thrown by CreateAngularUnit in
    // the following scenarios:
    // - if the factory code used is a non-angular factory code
    //   (i.e. it corresponds to square meters which is an area unit code)
    // - if the factory code used is invalid
    //   (i.e. it is negative or doesn't correspond to any factory code)
  }

}

{
  // custom unit - 3 radians per unit
  var myAngularUnit = AngularUnit.CreateAngularUnit("myCustomAngularUnit", 3);
  string Name = myAngularUnit.Name;                   // myCustomAngularUnit
  double Factor = myAngularUnit.ConversionFactor;     // 3
  int Code = myAngularUnit.FactoryCode;               // 0 because it is a custom angular unit
  double radiansUnit = myAngularUnit.RadiansPerUnit;  // 3

  // convert 10 degrees to my unit
  double converted = AngularUnit.Degrees.ConvertTo(10, myAngularUnit);
  // convert it back to degrees
  converted = myAngularUnit.ConvertTo(converted, AngularUnit.Degrees);

  // convert 1 radian into my angular units
  converted = myAngularUnit.ConvertFromRadians(1);

  // get the wkt
  string wkt = myAngularUnit.Wkt;

  // create an angular unit from this wkt
  var anotherAngularUnit = AngularUnit.CreateAngularUnit(wkt);
  // anotherAngularUnit.ConversionFactor = 3
  // anotherAngularUnit.FactoryCode = 0    
  // anotherAngularUnit.RadiansPerUnit = 3
}