Acos Example Syntax VB.NET ASP.NET | Acos | Source Code
Acos Example Syntax VB.NET ASP.NET | Acos | Source Code
Summary: – Illustrates using Acos with Source Code Syntax Example in VB.NET ASP.NET.
Purpose:
takes a cosine as double data type number and returns
a double value that represents the angle in radians (you can convert
the radians to degrees by multiplying them by Math.PI/180)
Syntax:
Acos(double)
Acos(double)
Parameters | Description | double | Any valid System.Double data type number between -1 and +1 – this represents the cosine that is to be converted into radians for an angle. if number < -1 or > 1, NaN is returned – NaN stands for Not a Number |
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Result Data Type | Description | double | an angle measured in radians. The angle must be between 0 and pie. |
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Quick Example | Acos(-0) ‘ Returns 1.5707963267949 |
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Step 1: Click on Visual Basic to Cut-n-paste code into Acos.aspx.vb
Imports System Imports System.IO Imports System.Data Imports System.Math '******************************************************************************** ' Purpose: takes a cosine as double data type number and returns ' a double value that represents the angle in radians (you can convert ' the radians to degrees by multiplying them by Math.PI/180) ' ' Syntax: Acos(double) ' ' Parameter1: double - Any valid System.Double data type number between -1 and +1 ' - this represents the cosine that is to be converted into radians for an angle. ' if number < -1 or > 1, NaN is returned - NaN stands for Not a Number ' ' Result: double - an angle measured in radians. The angle must be between 0 and pie. ' ' Quick Example: Acos(-0) ' Returns 1.5707963267949 ' ' '******************************************************************************** ' This example is from http://idealprogrammer.com Partial Class _Acos Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Label1.Text = "Example #1: Acos(90)" TextBox1.Text = Acos(90) ' Returns NaN Label2.Text = "Example #2: Acos(-3.4)" TextBox2.Text = Acos(-3.4) ' Returns NaN Label3.Text = "Example #3: Acos(-0)" Dim Integer3 As Integer = Acos(-0) TextBox3.Text = Acos(-0) ' Returns 1.5707963267949 End Sub End Class |
Step 2: Click on XML to Cut-n-paste code into Acos.aspx
< %@ Page Language="VB" AutoEventWireup="false" CodeFile="Acos.aspx.vb" Inherits="_Acos" %> < !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <h1><asp:label ID="Label1" runat="server" Text="Label"></asp:label> </h1> <asp:textbox ID="TextBox1" runat="server"></asp:textbox><br /> <h1><asp:label ID="Label2" runat="server" Text="Label"></asp:label> </h1> <asp:textbox ID="TextBox2" runat="server"></asp:textbox><br /> <h1><asp:label ID="Label3" runat="server" Text="Label"></asp:label> </h1> <asp:textbox ID="TextBox3" runat="server"></asp:textbox><br /> </div> </form> </body> </html> |
Prerequistes:
- Install Visual Web Developer 2010
- Install SQL Server Express
- Download Northwind and Pubs Databases
- Attach Northwind Database to Databases in Sql Express
- Attach pubs Database to Databases in Sql Express
Notes:
- You can build your own library of syntax examples by using same web site over and over and just add new web forms to it.
Instructions:
- Use Visual Web Developer 2010
- Create new web site;
- Click File/New Web Site
- Select ASP.NET Website Template
- Select Visual Basic for Language
- name of Web Site could be VBNET_ASPNET_Syntax.
- Add New folder named “Functions”
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: Functions
- Add New subfolder named “MathFunctions”
- Right-click Functions folder in solution explorer;
- add new folder;
- name of folder could be: MathFunctions
- Add Web Form Named Acos to MathFunctions folder
- Right-click MathFunctions folder;
- add new item;
- Select Web Form
- Check place code behind in separate file
- Web Form name could be Acos
- Click on Visual Basic in step 1 at the top of this page to copy code into code-behind Acos.aspx.vb
- Click on XML in step 2 above to copy code into web form Acos.aspx
- Right-click on Acos.aspx in solution explorer and select view in browser