cosine function

The cos function is a trigonometric function. The cos function returns the cosine of an angle specified in radians.

Syntax:

double cos(n)

Semantics:

n: The argument n is an expression that resolves to a number (an angle expressed in radians).
return type: double.
The resultant value is in the range -1 through 1 with the following exceptions:
- Returns a NULL value in the following cases:
  - n resolves to a NULL value
  - n does not resolve to a number
- Returns NaN if n resolves to NaN or infinity(positive/negative).

Example:

SELECT cos(n) FROM Archery