Categories:

Numeric functions (Trigonometric)

ATAN

Computes the inverse tangent (arc tangent) of its argument; the result is a number in the interval [-pi, pi].

Syntax

ATAN( <real_expr> )
Copy

Arguments

real_expr

This expression should evaluate to a real number.

Returns

Returns the arc tangent in radians (not degrees) in the range [-pi, pi].

Examples

SELECT ATAN(1);  --------------+    ATAN(1)    | --------------+  0.7853981634 | --------------+
Copy
Language: English