| CFML Reference |
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ColdFusion Functions |
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| CFML Reference |
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ColdFusion Functions |
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Returns the cosine of an angle, in radians.
Cos(number)
| Parameter |
Description |
|---|---|
| number |
Angle, in radians, for which you want the cosine |
The range of the result is -1 to 1.
To convert degrees to radians, multiply degrees by π/180. To convert radians to degrees, multiply radians by 180/π.
<!--- This snippet shows how to use Cos --->
<html>
<head>
<title>Cos Example</title>
</head>
<body bgcolor = silver>
<H3>Cos Example</H3>
<!--- output its Cos value --->
<cfif IsDefined("FORM.CosNum")>
<cfif IsNumeric(#FORM.CosNum#)>
Cos(<cfoutput>#FORM.CosNum#</cfoutput>) =
<cfoutput>#Cos(FORM.cosNum)#
radians = #Evaluate(Cos(FORM.cosNum) * 180/PI())#
Degrees</cfoutput>
<cfelse>
<!--- if it is empty, output an error message --->
<H4>Please enter a number between -1 and 1</H4>
</cfif>
</cfif>
<form action = "cos.cfm" method = "POST">
<P>Type in a number to get its cosine in Radians and Degrees
<BR><input type = "Text" name = "cosNum" size = "25">
<P><input type = "Submit" name = ""> <input type = "RESET">
</FORM>
</body>
</html>
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