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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
Function: ATAN()
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Help  

Relation with ASIN ans ACOS functions

ATAN function definition and online calculator

Related functions

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