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Sin
Last update:
May 18, 2026
escription
Calculates the sine of an angle that is entered in radians.
Returns
A number; the sine of the angle.
Category
Function syntax
Sin(number) |
See also
Parameters
Parameter | Description |
number | Angle, in radians for which to calculate the sine. |
Usage
The range of the result is -1 to 1. To convert degrees to radians, multiply degrees by p/180. To convert radians to degrees, multiply radians by 180/p.
Note: Because the function uses floating point arithmetic, it returns a very small number (such as 6.12323399574E-017) for angles that should produce 0. To test for a 0 value, check whether the value is less than 0.0000000000001.
Example
<cfscript>
val=0.5
writeOutput("The sin of " & val & " is: " & sin(val))
</cfscript>Output
The sin of 0.5 is: 0.479425538604
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