Returns the arctangent of a number.
Syntax
Math.atan(number)
Remarks
The required number argument is a numeric expression for which the arctangent is needed.
The return value is the arctangent of the number argument, in radians.
Applies To: Math Object
Requirements
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported in Store apps (Windows 8 and Windows Phone 8.1). See Version Information.
See Also
Math.acos Function
Math.asin Function
Math.atan2 Function
Math.cos Function
Math.sin Function
Math.tan Function
Math Object