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ααααΆβααΌαααΈαα»αβααβαα»αβαα½αβΒ α αα»αβααααΌαβααΆαβαααααΆααβββααΆβαααΆαααααΒ α ααααααβαααα·αβαα βα ααααα -1 αα·α 1Β α
Using the angle Alpha, the Cos function calculates the ratio of the length of the side that is adjacent to the angle, divided by the length of the hypotenuse in a right-angled triangle.
Cos(Alpha) = Adjacent/Hypotenuse
Cos (Number As Double) As Double
Double
α ααα½αβ α ααααααβαααβαααβαααααΆααβαα»αββααΆβαααΆααααα αααβα’αααβα ααβααααΆβααΌαααΈαα»αΒ α
ααΎααααΈβααααααβααΊααααβααΆβαααΆααααα αα»αβααΊααααβααΆαα½αβααΉα pi/180Β α ααΎααααΈβααααααβαααΆαααααβααΆβααΊαααα αα»αβαααΆαααααβααΆαα½αβααΉα 180/piΒ α
degree=(radian*180)/pi
radian=(degree*pi)/180
Pi is here the fixed circle constant with the rounded value 3.14159...
REM The following example allows for a right-angled triangle the input of
REM secant and angle (in degrees) and calculates the length of the hypotenuse:
Sub ExampleCosinus
REM rounded Pi = 3.14159
Dim d1 As Double, dAngle As Double
d1 = InputBox$ (""Enter the length of the adjacent side: ","Adjacent")
dAngle = InputBox("Enter the angle Alpha (in degrees): ","Alpha")
Print "The length of the hypotenuse is"; (d1 / cos (dAngle * Pi / 180))
End Sub