====== ACOS ======

{{:en:mervis-ide:35-help:acos.png}}

===== Function name =====

ACOS

===== ST call =====

<code st-iec>
PROGRAM ACOS_DEMO
  VAR
     REAL1,REAL2: REAL;
  END_VAR
 REAL2:= ACOS(IN:=REAL1);
END_PROGRAM
</code>

===== Description =====

Returns value of the inverse function to cosine function.

===== Inputs =====

|Input|Type    |Description       |
|IN   |ANY_REAL|Input value <-1;1>|

===== Outputs =====

|Output|Type    |Description          |
|=>    |ANY_REAL|Output value (in rad)|

===== Application example =====

{{:en:mervis-ide:35-help:acos_example.png}}