Ruby CMath cos() Method with example

cos() method is Math class which is used to returns the cosine of the given value.

Syntax: Math.cos(z)

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



Returns: This method returns the cosine value of the z.

Example 1:

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# Ruby code for cos() method
require 'cmath'
  
# Initializing values 
a = 0.3584
b = 2
  
# Printing result   
puts "cos value of a : #{CMath.cos(a)}\n\n" 
puts "cos value of b : #{CMath.cos(b)}\n\n"

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Output:

cos value of a : 0.9364592642630104

cos value of b : -0.4161468365471424

Example 2:

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# Ruby code for cos() method
require 'cmath'
  
# Initializing values  
a = 0
b = -0.247
  
# Printing result   
puts "cos value of a : #{CMath.cos(a)}\n\n"  
puts "cos value of b : #{CMath.cos(b)}\n\n"

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Output:

cos value of a : 1.0

cos value of b : 0.9696502723724634


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