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αααα‘ααβαααΈαα»αβααβαα»ααα½αβΒ α αα»αβααααΌαβααΆαβαααααΆααβββααΆβαααΆαααααΒ α ααααααβαααα·αβαα βα ααααα -1 αα·α 1Β α
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
Sin (Number As Double) As Double
Double
α ααα½αβ α ααααααβαααβαααβαααααβαα»αββααΆβαααΆααααα αααβα’αααβα ααβααααΆβαααΈαα»αΒ α
To convert degrees to radians, multiply degrees by Pi/180, and to convert radians to degrees, multiply radians by 180/Pi.
degrees=(radians*180)/Pi
radians=(degrees*Pi)/180
Pi is approximately 3.141593.
REM 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