Skip to main content
MedCalc
Mail a PDF copy of this page to:
(Your email address will not be added to a mailing list)
working
Show menu

ATAN function

Description

Arc tangent function. ATAN(x) returns the arc tangent of x. The arc tangent function is the inverse function of the tangent function and calculates the angle for a given tangent x. The result is an angle expressed in radians. To convert from radians to degrees, use the DEGREES function.

Examples

ATAN(0) equals 0

ATAN(1) equals 0.78539816 (=PI/4)

Calculator

ATAN(  

Graph

ATAN function

Relation with ASIN ans ACOS functions

Relation of ASIN with ACOS and ATAN functions

Related functions

External links