The “atan” Function in R

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

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

• General Class: Mathematical Computation

• Required Argument(s):

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

• Notable Optional Arguments:

• None

• Example:

• # Example usage
  values <- c(-1, 0, 1)
  
  # Compute the arctangent
  arctangent_values <- atan(values)
  
  print(arctangent_values)

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