public static void EvaluateSine()
{
Project project = CreateTestProjectWithCustomField();
// Set formula Sin(pi/2)
project.ExtendedAttributes[0].Formula = "Sin(3.1415926/2)";
// Print Calculated value
Task task = project.RootTask.Children.GetById(1);
Console.WriteLine("Sin(pi/2): {0}", task.ExtendedAttributes[0].Value);
}