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Start at both ends
Return the arc tangent of a number:
SELECT ATAN(2.5);The ATAN() function returns the arc tangent of one or two numbers.
number )
a, b )
A numeric value a, b Two numeric values to calculate the arc tangent of
From MySQL 4.0
Return the arc tangent of two values:
SELECT ATAN(-0.8, 2);❮ MySQL Functions