Ruby | CMath acos() Method

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

Syntax: Math.acos(z) Parameter: Here, z is the value whose arc cosine is to be calculated. Returns: This method returns the arc cosine value of the z.

Example #1:

Ruby

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

# Initialize value
a = 0.3584
b = 2

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

Output:

acos value of a : 1.204242852965772

acos value of b : 0.0+1.3169578969248164i

Example #2:

Ruby

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

# Initialize value
a = 0
b = -0.247

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

Output:

acos value of a : 1.5707963267948966

acos value of b : 1.8203794286756558