atan2() is an inbuilt method in Java which is used to return the theta component from polar coordinate. The atan2() method returns a numeric value between – and representing the angle 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).
Math.atan2(double y, double x) where, x and y are X and Y coordinates in double data type.
It returns a double value. The double value is from polar coordinate (r, theta).
Example : Program demonstrating the atan2() method
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