RAD Studio VCL Reference
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System.ArcTan Function

Calculates the arctangent of a given number.

Pascal
function ArcTan(const X: Extended): Extended;
C++
Extended ArcTan(const Extended X);

System

In Delphi code, ArcTan returns the arctangent of X. 

X is a real-type expression that gives an angle in radians. 

 

Cos 

Sin 

ArcTan2 

Tan 

ArcSin 

ArcCos

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