Ruby CMath atan() Method with example

atan() method is CMath class which is used to returns the arc tangent of the given value.

Syntax: Math.atan(z)

Parameter: Here, z is the value whose arc tangent is to be calculated.

Returns: This method returns the arc tangent value of the z.

Example 1:

# Ruby code for atan() method
require 'cmath'

# Initializing value
a = 0.3584
b = 2

# Printing result
puts "atan value of a : #{CMath.atan(a)}\n\n"
puts "atan value of b : #{CMath.atan(b)}\n\n"

Output:

atan value of a : 0.34413842830780517

atan value of b : 1.1071487177940904

Example 2:

# Ruby code for atan() method
require 'cmath'

# Initializing value
a = 0
b = -0.247

# Printing result
puts "atan value of a : #{CMath.atan(a)}\n\n"
puts "atan value of b : #{CMath.atan(b)}\n\n"

Output:

atan value of a : 0.0

atan value of b : -0.24215314674687552