Returns the sine of an angle. The angle is specified in radians. The result lies between -1 and 1.
Using the angle Alpha, the Sin Function returns the ratio of the length of the opposite side of an angle to the length of the hypotenuse in a right-angled triangle.
Sin(Alpha) = side opposite the angle/hypotenuse
Number: Numeric expression that defines the angle in radians that you want to calculate the sine for.
To convert degrees to radians, multiply degrees by Pi/180, and to convert radians to degrees, multiply radians by 180/Pi.
Pi is approximately 3.141593.
' In this example, the following entry is possible for a right-angled triangle: REM The side opposite the angle and the angle (in degrees) to calculate the length of the hypotenuse: Sub ExampleSine REM Pi = 3.1415926 is a predefined variable Dim d1 As Double Dim dAlpha As Double d1 = InputBox("Enter the length of the opposite side: ","Opposite Side") dAlpha = InputBox("Enter the angle Alpha (in degrees): ","Alpha") Print "The length of the hypotenuse is"; (d1 / sin (dAlpha * Pi / 180)) End Sub