DAX Function Guide

ATAN
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Sam McKay

CEO & Founder

How does the ATAN work?
The ATAN Function (DAX) returns the arctangent or the inverse tangent value. The arctangent is the angle whose tangent is number. The returned angle is given in radians in the range -pi/2 to pi/2.
ATAN Formula Syntax

ATAN(
     number
)

How do you use the ATAN?

To express the arctangent in degrees, you can simply multiply the result by 180/PI( ) or use the DEGREES function. 

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Considerations when using the ATAN?

Its parameter is a number which is the tangent of the angle you want. 

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Formula examples using the ATAN

=ATAN(1)

=ATAN(1)*180/PI()

=DEGREES(ATAN(1))

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