User Guide
Chapter 2: ColdFusion Functions 517
Sin
Returns the sine of the given angle.
See also ASin, Atn, Cos, Pi, and Tan.
Syntax Sin(
number
)
number
Angle in radians for which you want the sine. If the angle is in degrees, multiply it
by PI()/180 to convert it to radians.
Examples <!--- This snippet shows how to use Sin --->
<HTML>
<HEAD>
<TITLE>
Sin Example
</TITLE>
</HEAD>
<BODY BGCOLOR=silver>
<H3>Sin Example</H3>
<!--- output its Sin value --->
<CFIF IsDefined("FORM.SinNum")>
<CFIF IsNumeric(FORM.SinNum)>
Sin(<CFOUTPUT>#FORM.SinNum#</CFOUTPUT>) =
<CFOUTPUT>#Sin(FORM.sinNum)# Degrees =
#Evaluate(Sin(FORM.sinNum) * PI()/180)# Radians
</CFOUTPUT>
<CFELSE>
<!--- if it is empty, output an error message --->
<H4>Please enter an angle for which you want the Sin value</H4>
</CFIF>
</CFIF>
<FORM ACTION="sin.cfm" METHOD="POST">
<P>Type in a number to get its sine in Radians and Degrees
<BR><INPUT TYPE="Text" NAME="sinNum" size="25">
<P><INPUT TYPE="Submit" NAME=""> <INPUT TYPE="RESET">
</FORM>
</BODY>
</HTML>