====== ACos(cosine) ======
Category:  Number function

\\ 
=====Description=====
This function returns the arccosine - the angle, in radians((Conversion:  radians = degrees * ([[syntax:functions:pi|Pi()]] / 180) )), whose cosine is //cosine//.

\\ 
=====Arguments=====
^Argument^Type^Description^
|cosine|Number (between -1 and 1)|The cosine of an angle.|
\\ 
**Return value type:**  Number

\\ 
=====Examples=====

  acos( 0.707) //Returns .7855…

  acos(0.000796) //Returns 1.57…

\\ 
===== See also =====
  * [[syntax:functions:arctan|ArcTan(number1, number2)]]
  * [[syntax:functions:asin|ASin(sine)]]
  * [[syntax:functions:arctan|ATan(tangent)]]
  * [[syntax:functions:cos|Cos(angle)]]