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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