Categories: Math

ACOS

Computes the arccosine (inverse cosine) of a value in radians.

Syntax

ACOS(numeric_expression NUMERIC) → FLOAT

• numeric_expression: The number in radians. This must be DOUBLE, INTEGER, BIGINT, DECIMAL, or FLOAT.

Examples

ACOS example

SELECT ACOS(0)
-- 1.5707963267948966

ACOS example

SELECT ACOS(1.0)
-- 0.0

ACOS example

SELECT ACOS(-1)
-- 3.141592653589793