Imports System.Math
Public Class clsTanh
 
    Public Sub Main()
 
 
        '********************************************************************************
        ' Purpose: converts an angle measured in radians to a hyperbolic tangent.  (you can convert 
        ' the radians to degrees by multiplying them by Math.PI/180) 
        ' 
        ' Syntax: 	Tanh(doublenumber)
        '  
        ' Parameter1: doublenumber - double percision floating point 
        ' number representing an angle measured in radians. 
        '
        ' Result: double - represents the hyperbolic tangent of the angle specified in 
        ' parameter1. If parameter1 is equal to NegativeInfinity, 
        ' -1 is returned. If parameter1 is NaN, 
        ' NaN (Not a Number) is returned. If parameter1
        ' is PositiveInfinity, +1 is returned.
        '
        '********************************************************************************
        ' This example is from http://idealprogrammer.com
 
        Console.WriteLine("Example #1: 	Tanh(doublenumber)")
 
        Dim radians As Double = 30 * 180 / Math.PI
 
        Console.WriteLine("Tanh(radians) = {0}", Tanh(radians)) ' Returns 1
 
        'write blank line to make output easier to read
        Console.WriteLine()
 
        Console.WriteLine("Example #2: 	Tanh(doublenumber)")
 
        radians = -90 * 180 / Math.PI
 
        Console.WriteLine("Tanh(radians) = {0}", Tanh(radians)) ' Returns -1
        'write blank line to make output easier to read
        Console.WriteLine()
 
        Console.WriteLine("Example #3: 	Tanh(doublenumber)")
 
        Dim Integer3 As Integer = Tanh(-0)
 
        radians = 180 * 180 / Math.PI
 
        Console.WriteLine("Tanh(radians) = {0}", Tanh(radians)) ' Returns 1
 
        'Prevent console from closing before you press enter
        Console.ReadLine()
 
    End Sub
 
End Class

Module Module1
 
    Sub Main()
 
 
        Dim myclsTanh As New clsTanh
        myclsTanh.Main()
 
 
 
    End Sub
 
End Module