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v4.0
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    中文EN
    v4.0

      asin() | Arcsine

      Parameters, Value

      Arcsine function calculates the radians of the sine value, the input is [-1,1], and the output is [-PI/2, PI/2].

      Syntax:

      • Format: asin(<sine>)
      • Parameters: see table below
      • Value: ATTR (number),it should be >= -PI/2 and <= PI/2
      Name Category Specification Description
      radian ATTR(number) >= -1 and <= 1 the sine value to be calculated

      Common Usage

      Example: calculate the radians of the sine value 0.5

      return asin(0.5) * 180 / pi()
      

      Example: calculate the radians of a column of sine value 0.5

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