
cos(+Number, -Result)
-Result is cos(+Number)

   Evaluates the trigonometric function cos(Number) and unifies the resulting
value with Result.



Arguments
   Number              A number.
   Result              Output: float or breal.

Type
   Arithmetic

Description

   Evaluates the trigonometric function cos(Number) and unifies the resulting
   value with Result.

   This predicate can be used as a function in arithmetic expressions.
   In coroutining mode, if Number is uninstantiated, the call to cos/2 is
   delayed until this variable is instantiated.




Modes and Determinism
   cos(+, -) is det

Exceptions
     4 --- Number is not instantiated (non-coroutining mode only).
    24 --- Number is not of a numeric type.

Examples
   
Success:
    Result is cos(0).			% gives Result = 1.0
    Result is cos(1.2).			% gives Result = 0.362358
    Result is cos(-33).			% gives Result = -0.0132767


See Also
   is / 2
