ATAN2

Returns the arc tangent of the two variables x and y. It is similar to calculating the arc tangent of y / x, except that the signs of both arguments are used to determine the quadrant of the result. ATAN(y, x) is a synonym for ATAN2(y, x).

Syntax

ATAN2( <y, x> )

Examples

SELECT ATAN2(-2, 2);

┌─────────────────────┐
│   atan2((- 2), 2)   │
├─────────────────────┤
│ -0.7853981633974483 │
└─────────────────────┘