Returns the inverse tangent of the given X and Y coordinates. The angular value of the inverse tangent is equal to the X axis and the line passing through the origin and the given coordinate point (X coordinates, Y coordinates)
The Angle between. The result is expressed in radians and is between -pi and pi (excluding -pi).
grammar
ATAN2 (X coordinates,Y coordinates)
The x-coordinate of the x-coordinate point.
The Y coordinate of the Y coordinate point.
Instructions
■ A positive result indicates the Angle of counterclockwise rotation from the X-axis, and a negative result indicates the Angle of clockwise rotation from the X-axis.
■ATAN2(a, b) is equal to ATAN(b/a) unless a is zero.
■ If the X and Y coordinates are both zero, ATAN2 returns the error value #Div/0! .
■ To represent the arctangent value in DEGREES, multiply the result by 180/PI() or use the degrees function.
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