/text/sbasic/shared/03080103.xhp

Sin function Sin Function 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 Syntax: Sin (Number) Return value: Double Parameters: 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. grad=(radiant*180)/pi radiant=(grad*pi)/180 Pi is approximately 3.141593. Example: ' In this example, the following entry is possible for a right-angled triangle: ' The side opposite the angle and the angle (in degrees) to calculate the length of the hypotenuse: Sub ExampleSine ' 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