ATAN2 Google Sheet Formula

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ATAN2 Formula Syntax

=ATAN2(1, 1)

Example Use Case

Calculating the angle (in radians) from x and y coordinates for directional analysis

Understanding the ATAN2 Formula

The ATAN2 function in Excel computes the arctangent of y/x, using two arguments (x, y) to determine an angle in radians between -π and π. Unlike ATAN, it considers the quadrant based on the signs of both inputs, making it ideal for directional calculations like angles in coordinate systems.

Picture plotting a point (1, 1): ATAN2 finds its angle from the positive x-axis. It’s a step up from ATAN, offering full-circle precision for navigation, robotics, or graphics where direction matters.

Why Use ATAN2?

ATAN2’s quadrant awareness makes it perfect for polar coordinates or motion tracking. It’s a staple in programming and engineering, providing accurate angles without manual adjustments—essential for real-world spatial tasks.