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Calculates the cosine of an angle. The angle is specified in radians. The result lies between -1 and 1.

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

Number: Numeric expression that specifies an angle in radians that you want to calculate the cosine for.

डिग्री को रेडियन में बदलने के लिए, डिग्री को pi/180 से गुणा करें. रेडियन को डिग्री में बदलने के लिए, रेडियन को 180/pi से गुणा करें.

grad=(radiant*180)/pi

radiant=(grad*pi)/180

Pi is here the fixed circle constant with the rounded value 3.14159...

```
' The following example allows for a right-angled triangle the input of
' 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
```