cos

Computes cosine of the input column. Supports Spark Connect.

For the corresponding Databricks SQL function, see cos function.

Syntax

from pyspark.sql import functions as dbf

dbf.cos(col=<col>)

Parameters

Parameter	Type	Description
col	pyspark.sql.Column or column name	angle in radians

Returns

pyspark.sql.Column: cosine of the angle, as if computed by java.lang.Math.cos().

Examples

from pyspark.sql import functions as dbf
spark.sql("SELECT * FROM VALUES (PI()), (PI() / 4), (PI() / 16) AS TAB(value)").select("*", dbf.cos("value")).show()

+-------------------+------------------+
|              value|        COS(value)|
+-------------------+------------------+
|  3.141592653589...|              -1.0|
| 0.7853981633974...|0.7071067811865...|
|0.19634954084936...|0.9807852804032...|
+-------------------+------------------+

from pyspark.sql import functions as dbf
spark.sql("SELECT * FROM VALUES (FLOAT('NAN')), (NULL) AS TAB(value)").select("*", dbf.cos("value")).show()

+-----+----------+
|value|COS(value)|
+-----+----------+
|  NaN|       NaN|
| NULL|      NULL|
+-----+----------+