Arctangent function. The arctangent is the angle whose tangent is number.
Atn(number)
Parameter | Description |
---|---|
number |
Tangent of an angle |
The range of the result is -π/2 to π/2 radians. To convert degrees to radians, multiply degrees by π/180. To convert radians to degrees, multiply radians by 180/π.
<h3>Atn Example</h3> <!--- output its Atn value ---> <cfif IsDefined("FORM.AtnNum")> <cfif IsNumeric(FORM.AtnNum)> Atn(<cfoutput>#FORM.AtnNum#</cfoutput>) = <cfoutput>#Atn(FORM.AtnNum)# radians = #Evaluate(Atn(FORM.AtnNum * 180/PI())# Degrees</cfoutput> <cfelse> <!--- if it is empty, output an error message ---> <h4>Enter a number</h4> </cfif> </cfif> <form action = "atn.cfm"> <p>Enter a number to get its arctangent in Radians and Degrees <br><input type = "Text" name = "atnNum" size = "25"> <p><input type = "Submit" name = ""> <input type = "RESET"> </form>