xpress.acos
| xpress.acos | 
  Purpose
 
 Returns the arccosine of a given expression.
  Synopsis
 
  a = xpress.acos (t) 
 
  Argument
 
 | 
     t 
     | 
     Argument of the arccosine function.
     | 
  Further information
 
 Using Python's math library operator math.acos is only advisable when the argument is not an expression that depends on variables.
  Related topics
 
  
