cos
Description
Computes the cosine of the argument.
Syntax
DOUBLE cos(DOUBLE arg)
Parameters
arg
: You can specify only a numeric value. This function converts the numeric value into a DOUBLE value before it computes the cosine of the value.
Return value
Returns a value of the DOUBLE data type.
Usage notes
If you specify a non-numeric value, this function returns NULL
.
Examples
mysql> select cos(-1);
+--------------------+
| cos(-1) |
+--------------------+
| 0.5403023058681398 |
+--------------------+
mysql> select cos(0);
+--------+
| cos(0) |
+--------+
| 1 |
+--------+
mysql> select cos(1);
+--------------------+
| cos(1) |
+--------------------+
| 0.5403023058681398 |
+--------------------+
mysql> select cos("");
+---------+
| cos('') |
+---------+
| NULL |
+---------+
keyword
COS