Graphics Silverlight

    xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' 
    xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
    xmlns:d='http://schemas.microsoft.com/expression/blend/2008' 
    xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' 
    mc:Ignorable='d' 
    d:DesignWidth='640' d:DesignHeight='480'>
    
        
    

//File: Page.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
namespace SilverlightApplication3
{
    public partial class MainPage : UserControl
    {
        Point vectorLength = new Point();
        double angle;
        public MainPage()
        {
            InitializeComponent();
            vectorLength.X = 5;
            vectorLength.Y = 5;
            double radians = Math.Atan2(vectorLength.Y, vectorLength.X);
            angle = Convert.ToInt16(180 / Math.PI * radians);
            msgBlock.Text = angle + "";
        }
    }
}