Ruby | Math atan2() function

The atan2() is an inbuilt function in Ruby returns angent inverse of (y/x), where y is the proportion of the y-coordinate and x is the proportion of the x-coordinate. The numeric value lies between –pi and +pi representing the angle theta of a (x, y) point and positive x-axis. It is the counterclockwise angle, measured in radian, between the positive X-axis, and the point (x, y).

Syntax: Math.atan2(y, x)

Parameters: The function accepts x and y coordinates.

Return Value: It returns returns a numeric value between –pi and +pi representing the angle theta of a (x, y) point and positive x-axis

Example 1:

#Ruby program for atan2() function

#Assigning values
y1 = 10 x1 = 10

    y2
    = 15 x2 = 10

#Prints the atan2() value
              puts Math.atan2(y1, x1)
                  puts Math.atan2(y2, x2)

Output:

0.7853981633974483
0.982793723247329

Example 2:

#Ruby program for atan2() function

#Assigning values
y1 = 10 x1 = 5

    y2
    = 29 x2 = 17

#Prints the atan2() value
              puts Math.atan2(y1, x1)
                  puts Math.atan2(y2, x2)

Output:

 1.1071487177940904
1.0405805540182667

Reference: https://devdocs.io/ruby~2.5/math#method-c-atan2Ruby