ATan

 Calculates the arctangent, or inverse tangent, of a number. The angle is expressed in radians, in an interval from -pi/2 to +pi/2.

Syntax

ATan(number)
ArcTan(number)
number = number whose arctangent you want to calculate

Remarks

If you want a result expressed in degrees, you can multiply it by 180/pi or use the Degrees function.

Example

ATan(1) = pi/4
Degrees(ATan(1)) = 45

Classification

Maths Trigonometry