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v4.0
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    中文EN
    v4.0

      acos() | Arccosine

      Parameters, Value

      Arccosine function calculates the radians of the cosine value, the input is [-1, 1], and the output is [0, PI].

      • Format:
      • Parameters: see table below
      • Value: ATTR ( number ), and it should be >= 0 and <= PI
      Name Category Specification Description
      radian ATTR(number) / The cosine value to be calculated

      Common Usage

      Example: calculate the radian of the cosine value 0.5

      return acos(0.5) * 180 / pi()
      

      Example: calculate the radians of a column of cosine values

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