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v4.0
    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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