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) |
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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) |
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Output:
1.1071487177940904 1.0405805540182667
Reference: https://devdocs.io/ruby~2.5/math#method-c-atan2Ruby
