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v4.0
    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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