ACOS()
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Overview
Returns the arc cosine of the given argument.
USAGE
ACOS(radians)
Argument Name | Description |
|---|---|
| An angle expressed in radians |
DETAILS
ACOS() is a trigonometric function that returns the arc cosine of the supplied angle, expressed in radians.
A NULL is returned if the argument is not a number between -1 and 1.
EXAMPLES
SELECT ACOS(0.42), ACOS(2);
+----------------+---------+
| ACOS(0.42) | ACOS(2) |
+----------------+---------+
| 1.137351006725 | NULL |
+----------------+---------+