ASin |
Description
Determines the arcsine of a number. The arcsine is the angle whose sine is number.
Returns
The arcsine, in radians, of a number.
Category
Mathematical functions
Function syntax
    ASin(number)
See also
Sin, Cos, ACos, Tan, Atn, Pi
Parameters
Parameter | Description
number | Sine of an angle. The value must be between -1 and 1, inclusive.
Usage
The range of the result is -p/2 to p/2 radians. To convert degrees to radians, multiply degrees by p/180. To convert radians to degrees, multiply radians by 180/p.
Example
    <h3>ASin Example</h3>
    <!--- output its arcsine value --->
    <cfif IsDefined("FORM.SinNum")>
       <cfif IsNumeric(FORM.SinNum)>
          <cfif FORM.SinNum LESS THAN OR EQUAL TO 1>
             <cfif FORM.SinNum GREATER THAN OR EQUAL TO -1>
                ASin(<cfoutput>#FORM.SinNum#</cfoutput>) =
                 <cfoutput>#Evaluate(ASin(FORM.sinNum))# Radians</cfoutput>
                 <br> or <br>ASin(<cfoutput>#FORM.SinNum#</cfoutput>) =
                <cfoutput>
                   #Evaluate(ASin(FORM.sinNum) * 180/Pi())# Degrees
                </cfoutput>
             <cfelse>
    <!--- if it is less than negative one, output an error message --->
                <h4>Enter the sine of the angle to calculate, in degrees and radians.
                The value must be between 1 and -1, inclusive.</h4>
             </cfif>
          <cfelse>
    <!--- if it is greater than one, output an error message --->
          <h4>Enter the sine of the angle to calculate, in degrees and radians. The
    value must be between 1 and -1, inclusive.</h4>
          </cfif>
       <cfelse>
    <!--- if it is empty, output an error message --->
          <h4>Enter the sine of the angle to calculate, in degrees and radians. The
    value must be between 1 and -1,inclusive.</h4>
       </cfif>
    </cfif>
    <form action = "asin.cfm">
    <p>Enter a number to get its arcsine in Radians and Degrees.
    <br><input type = "Text" name = "sinNum" size = "25">
    <p><input type = "Submit" name = ""> <input type = "RESET">
    </form>

number |
Sine of an angle. The value must be between -1 and 1, inclusive.