The “acos” Function in R

• Package: Base R (No specific package, it’s a built-in function)

• Purpose: To compute the arccosine (inverse cosine) of a numeric vector, returning values in radians.

• General Class: Mathematical Computation

• Required Argument(s):

• x: A numeric vector for which the arccosine is to be computed.

• Notable Optional Arguments:

• None

• Example:

• # Example usage
  values <- c(-0.5, 0, 0.5)
  
  # Compute the arccosine
  arccosine_values <- acos(values)
  
  print(arccosine_values)

• In this example, acos is a built-in function in base R, and it is used to compute the arccosine (inverse cosine) of a numeric vector. The x argument is the required numeric vector for which the arccosine is calculated. There are no notable optional arguments for this function. The result is a numeric vector where each element represents the arccosine of the corresponding element in the input vector, returned in radians.