Tan Example Syntax VB.NET ASP.NET | Tan | Source Code

Posted by on Saturday, May 14, 2011 · Leave a Comment 

Tan Example Syntax VB.NET ASP.NET | Tan | Source Code

Summary: – Illustrates using with in VB.NET ASP.NET.


View Other VB.NET ASP.NET Source Code Examples


Purpose:
converts an angle measured in radians to a tangent. (you can convert
the radians to degrees by multiplying them by Math.PI/180)

Syntax:
Tan(doublenumber)

Parameters Description
doublenumber double percision floating point
number representing an angle measured in radians.

Result Data Type Description
double represents the tangent of the angle specified in
parameter1. If parameter1 is equal to NaN,
NegativeInfinity, or PositiveInfinity,
NaN (Not a Number) is returned.

Quick Example
Tan(radians) ‘ Returns 0.449218546627416

Step 1: Click on Visual Basic to Cut-n-paste code into Tan.aspx.vb

 
Imports System
Imports System.IO
Imports System.Data
Imports System.Math
 
'********************************************************************************
' Purpose: converts an angle measured in radians to a tangent.  (you can convert
' the radians to degrees by multiplying them by Math.PI/180)
'
' Syntax: 	Tan(doublenumber)
'
' Parameter1: doublenumber - double percision floating point
' number representing an angle measured in radians.
'
' Result: double - represents the tangent of the angle specified in
' parameter1. If parameter1 is equal to NaN,
' NegativeInfinity,  or PositiveInfinity,
' NaN (Not a Number) is returned.
'
' Quick Example:  Tan(radians) ' Returns 0.449218546627416
'
'********************************************************************************
' This example is from http://idealprogrammer.com
 
 
 
Partial Class _Tan
    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: 	Tan(doublenumber)"
 
        Dim radians As Double = 30 * 180 / Math.PI
 
        TextBox1.Text = String.Format("Tan(radians) = {0}", Tan(radians)) ' Returns 0.449218546627416
 
 
        Label2.Text = "Example #2: 	Tan(doublenumber)"
 
        radians = 90 * 180 / Math.PI
 
        TextBox2.Text = String.Format("Tan(radians) = {0}", Tan(radians)) ' Returns 3.18545051165583
 
 
        Label3.Text = "Example #3: 	Tan(doublenumber)"
 
        Dim Integer3 As Integer = Tan(-0)
 
        radians = 180 * 180 / Math.PI
 
        TextBox3.Text = String.Format("Tan(radians) = {0}", Tan(radians)) ' Returns -0.696494466235817
 
 
    End Sub
End Class

Step 2: Click on XML to Cut-n-paste code into Tan.aspx

< %@ Page Language="VB" AutoEventWireup="false" CodeFile="Tan.aspx.vb" Inherits="_Tan" %>
 
< !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:

  1. Install Visual Web Developer 2010
  2. Install SQL Server Express
  3. Download Northwind and Pubs Databases
  4. Attach Northwind Database to Databases in Sql Express
  5. 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:

VB.NET ASP.NET Syntax Functions MathFunctions Tan
  1. Use Visual Web Developer 2010
  2. 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.
  3. Add New folder named “Functions”
    • Right-click project name in solution explorer;
    • add new folder;
    • name of folder could be: Functions
  4. Add New subfolder named “MathFunctions”
    • Right-click Functions folder in solution explorer;
    • add new folder;
    • name of folder could be: MathFunctions
  5. Add Web Form Named Tan 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 Tan
  6. Click on Visual Basic in step 1 at the top of this page to copy code into code-behind Tan.aspx.vb
  7. Click on XML in step 2 above to copy code into web form Tan.aspx
  8. Right-click on Tan.aspx in solution explorer and select view in browser

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