`acos` function

Applies to: check marked yes Databricks SQL Databricks Runtime

Returns the inverse cosine (arccosine) of expr.

Syntax

acos(expr)

Arguments

expr: A numeric expression.

Returns

A DOUBLE.

If the argument is out of bounds, NaN is returned.

Examples

> SELECT acos(1);
 0.0

> SELECT acos(2);
 NaN