====== atan ======

===== Description =====

Calculate the [[wp>arctangent]] of a tangent value.

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

<code>
double atan <double:value>
</code>

===== Arguments =====

^ Name ^ Type ^ Comment ^
| value | double | A tangent value, the arctangent of which is to be calculated. |

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

The arctangent of the tangent value, as a double-precision angle, in radians.


===== Example =====

<code>
echo <zs:RadToDeg <zs:atan 1>> // atan of 1 should be 45 degrees
</code>

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

<file>
45
</file>

===== Comments =====

None.

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

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