atan2funktio
atan2funktio, commonly written as atan2, is the two-argument arctangent function used in mathematics and computing. It takes two real inputs, traditionally written as y and x, and returns the angle θ in radians such that tan θ = y/x, with θ placed in the correct quadrant based on the signs of x and y. Unlike the plain arctan of y/x, atan2 uses both arguments to resolve the quadrant of the resulting angle.
The function returns the polar angle of the point (x, y) relative to the positive x-axis. Equivalently,
Common applications include converting Cartesian coordinates to polar coordinates, determining headings or bearings in robotics and
Examples: atan2(1, 1) ≈ π/4; atan2(1, -1) ≈ 3π/4; atan2(-1, -1) ≈ -3π/4; atan2(0, -1) = π. Understanding the two-argument form