**CIGAL Reference Manual, Chapter 3 (Functions): cos**
===== Cos -- Calculate the cosine of a variable =====
**usage: result = cos(x)**

The COS function returns the cosine of its argument.  The input value
is in degrees and the output will be in the range of -1 to 1.  If
the input X is a variable with more than one value, COS will generate
an output variable with the same number of values.

Examples:
         type 'Cosine of 90 degrees:' cos(90)     ;  cos(90) == a/2 == 0.0
  
         #1 = angle()
         cos(#1)

**See Also:**\\
[[jvs:cigal:manual:chapter3:acos|ACOS(3)]], 
[[jvs:cigal:manual:chapter3:angle|ANGLE(3)]], 
[[jvs:cigal:manual:chapter3:asin|ASIN(3)]], 
[[jvs:cigal:manual:chapter3:sin|SIN(3)]]

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