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 1 - cosine function

SELECT cos(n) FROM Archery

Value of n	Output
0	1.0
radians(90)	6.123233995736766E-17
pi()	-1.0