Cos
Returns a Double specifying the cosine of an angle.
Syntax: Cos( number )
- number
- required A Double or any valid numeric expression that expresses an angle in radians.
The Cos function takes an angle and returns the ratio of two sides of a right triangle. The ratio is the length of the side adjacent to the angle divided by the length of the hypotenuse. The result lies in the range -1 to 1.
To convert degrees to radians, multiply degrees by pi/180. To convert radians to degrees, multiply radians by 180/pi.
Common Errors
| Error | When |
|---|---|
94 (&H5E), Invalid use of Null | number is Null |
5 (&H5), Invalid procedure call or argument | the magnitude of number is 9,223,372,036,854,775,808 (2^63) or more |
Note BETA 1034
When the magnitude of number is 9,223,372,000,000,000,000 or more but less than 2^63, VB6 and 64-bit VBA raise error 5 (&H5), Invalid procedure call or argument; twinBASIC raises none.
Example
This example uses the Cos function to return the cosine of an angle.
Dim MyAngle, MySecant
MyAngle = 1.3 ' Define angle in radians.
MySecant = 1 / Cos(MyAngle) ' Calculate secant.