红宝石 | CMath acos() 方法

acos() 方法是 CMath 类，用于返回给定值的反余弦值。

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.

示例 #1：

# 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"

输出：

acos value of a : 1.204242852965772

acos value of b : 0.0+1.3169578969248164i

示例 #2：

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

输出：

acos value of a : 1.5707963267948966

acos value of b : 1.8203794286756558