====== cos ======

===== Description =====

Calculate the [[wp>cosine]] of an angle.

===== Function prototype =====

<code>
double cos <double:Angle>
</code>

===== Arguments =====

^ Name ^ Type ^ Comment ^
| Angle | double | An angle, in radians, the cosine of which is to be calculated. |


===== Return value =====

The cosine of the angle, as a double. 

===== Example =====

<code>
double angle
set angle <zs:DegToRad 60> // convert 60 degrees to radians

echo <zs:cos angle> // cos of 60 degrees should be 0.5 
</code>

... the output of which is written to the event log by [[plugins:general:zeoscript:reference:functions:echo]] as:

<file>
0.5
</file>

===== Comments =====

None.

===== See also =====

  * [[plugins:general:zeoscript:reference:functions:sin]]
  * [[plugins:general:zeoscript:reference:functions:tan]]
  * [[plugins:general:zeoscript:reference:functions:asin]]
  * [[plugins:general:zeoscript:reference:functions:acos]]
  * [[plugins:general:zeoscript:reference:functions:atan]]
  * [[plugins:general:zeoscript:reference:functions:DegToRad]]
  * [[plugins:general:zeoscript:reference:functions:RadToDeg]]