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COS
Return the cosine value of an input radian value.
COS(number)
The return type is a DOUBLE PRECISION
number.
For example:
premdb=# select cos(1) from sys.const;
cos
------------------
0.54030230586814
(1 row)
premdb=# select cos(seasonid) from season;
cos
---------------------
0.54030230586814
-0.416146836547142
-0.989992496600445
-0.653643620863612
0.283662185463226
0.960170286650366
...
Parent topic:Mathematical Functions