Imports System
Public Module Module1
Public Sub Main()
Dim opposite As Double = 2.5
Dim hypotenuse As Double = 5
Dim angle_sin As Double = opposite / hypotenuse
Dim right_triangle_angle As Double = Math.Asin(angle_sin) * 180 / Math.PI
Console.Write("Right Triangle Angle = " + CStr(right_triangle_angle))
End Sub
End Module
' run:
'
' Right Triangle Angle = 30
'