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XQuery math:atan

math.atan

math.atan(
   x as Number
) as Number

Summary

Returns the arc tangent of x, in radians. in the range from -pi/2 to +pi/2 (inclusive).

Parameters
x The floating point number to be evaluated.

Example

  math.atan(3.14159)

  => 1.26262701154934

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