Function

atan( number )

Returns the arctangent(s) of the specified number(s) in radians.

Parameters

Keyword	Type	Description
number	Decimal	A number or array of numbers, the arctangent(s) of which will be returned.

Returns

Decimal

Usage considerations

This function can only be applied for numbers between -1 and 1.

Examples

atan(1) returns 0.7853981633974483