ACOS

Returns the arc cosine of x in radians, or NULL if x is not in the range [-1, 1].

Syntax

ACOS (x)

Arguments

  • x: the argument

Return Type

Float or double. NULL if x is NULL or invalid.

Examples

memsql> select acos(1);
+---------+
| acos(1) |
+---------+
|       0 |
+---------+
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