Categories: Math

ATAN2

Computes the Arctangent (inverse Tangent) of the ratio of its two arguments.

Syntax

ATAN2(y NUMERIC, x NUMERIC) → DOUBLE

• y: Floating-point input value for the y-coordinate, in the range (negative-infinity:positive-infinity).
• x: Floating-point input value for the x-coordinate, in the range (negative-infinity:positive-infinity).

Examples

ATAN2 example

SELECT ATAN2(1.0,0.0)
-- 1.5707963267948966

ATAN2 example

SELECT ATAN2(0.0,1.0)
-- 0.0

ATAN2 example

SELECT ATAN2(0.0,-1.0)
-- 3.141592653589793

ATAN2 example

SELECT ATAN2(-0.00000000001,-1.0)
-- -3.141592653579793

ATAN2 example

SELECT ATAN2(0.0,0.0)
-- 0.0