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v4.0
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    中文EN
    v4.0

      atan() | Arctangent

      Parameters, Value

      Arctangent function calculates the radians of the tangent value, the output is [-PI/2, PI/2].

      Syntax: atan(<tangent>)

      • Format: atan(<tangent>)
      • Parameters: see table below
      • Value: ATTR ( number ), it should be >= -PI/2 and <= PI/2
      Name Category Specification Description
      radian ATTR(number) / the tangent value to be calculated

      Common Usage

      Example: calculate the radian when the given tangent value is 1

      return atan(1) * 180 / pi()
      

      Example: calculate the radians of a column of tangent values

      uncollect [1, -0.5, 0] as a
      return atan(a)
      
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