Ruby 数学asin()函数

asin() 是Ruby中的一个内置函数，用于返回一个数字的正弦弧度，即给这个函数一个sin值，它将返回该值对应的弧度角。所传递的值在-1和+1之间。

语法 ：Math.asin(value)

参数 ：该函数接受一个强制性的参数值，我们必须找到其对应的角度。

返回值 ：它返回-pi/2 到 +pi/2 之间的弧度角。

例子 1 :

#Ruby program for asin() function
 
#Assigning values
val1 = 1 val2 = 0.5 val3 = -1 val4 = -0.9
 
#Prints the asin() value
                                      puts Math.asin(val1)
                                          puts Math.asin(val2)
                                              puts Math.asin(val3)
                                                  puts Math.asin(val4)

输出:

1.5707963267948966
0.5235987755982989
-1.5707963267948966
-1.1197695149986342

例2 :

#Ruby program for asin() function
 
#Assigning values
val1 = 0.87 val2 = 0.67 val3 = -0.679 val4 = -0.564
 
#Prints the asin() value
                                              puts Math.asin(val1)
                                                  puts Math.asin(val2)
                                                      puts Math.asin(val3)
                                                          puts Math.asin(val4)

输出:

1.0552023205488061
0.7342087874533589
-0.746399633896421
-0.59922176813665

参考资料 : https://devdocs.io/ruby~2.5/math#method-c-asin