ATAN2 returns a trigonometric arc tangent (inverse tangent) for two values X and Y, which are the lengths of the rectangular sides of a triangle.

Syntax

ATAN2(NumExp for X, NumExp for Y)

Arguments 

  • NumExp  for X is the length of one rectangular side of a triangle corresponding with the co-ordinate values.
  • NumExp for Y is the length of the other rectangular side of a triangle corresponding with the co-ordinate values.

Remarks

  1. ATAN2 produces the true angle corresponding with the X,Y co-ordinates (the arguments) whereas ATAN produces an angle only on the basis of Y/X which leaves the quadrant unknown (please note that in those cases two solutions are possible for one Y/X value).
  2. The result is in Radians.

Example knowledgebases

Download

An example knowledgebase of this function can be downloaded here.

Description

The example knowledge base contains all trigonometric functions. 

Wikipedia: [Inverse trigonometric function] | [Trigonometric function]

Quick links: Functions overview | Attribute overview | Constants overview | Dimensions overview

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