This function is used to calculate the cosine value of a, with input in radians.
Syntax
cos(DOUBLE a)
Parameters
Parameter |
Mandatory |
Type |
Description |
|---|---|---|---|
a |
Yes |
DOUBLE, BIGINT, DECIMAL, or STRING |
The value can be a float, integer, or string. If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation. |
Return Values
The return value is of the DOUBLE type.
If the value of a is NULL, NULL is returned.
Example Code
The value -0.99999999999999999986 is returned.
select cos(3.1415926);
The value NULL is returned.
select cos(null);