ATAN2 Google Sheets Formula

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ATAN2 Formula Syntax

=ATAN2(1, 1)

Example Use Case

Calculating the arctangent of the quotient of its arguments, considering the signs of both arguments to determine the correct quadrant, useful for trigonometric calculations and geometry in Google Sheets.

Understanding the ATAN2 Function in Google Sheets

The ATAN2 function returns the arctangent of the quotient of two numbers, y and x. It is commonly used in geometry, navigation, and trigonometric calculations where the angle from the x-axis is needed.

Unlike the ATAN function, which only returns the arctangent of a single number, ATAN2 takes into account the signs of both arguments to determine the correct quadrant.

Why Use ATAN2 in Google Sheets?

ATAN2 is helpful when you need to compute the angle between a point and the origin, such as when calculating directions, plotting points, or analyzing geometric shapes.

Example with Sample Data

Input	Formula	Result
1, 1	=ATAN2(1, 1)	0.7854
1, -1	=ATAN2(1, -1)	2.3562
-1, -1	=ATAN2(-1, -1)	-2.3562

The table above demonstrates the ATAN2 function's output for different x and y coordinates. This function is essential for calculations that require knowledge of angles and directions in Cartesian coordinates.