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v4.2
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v4.2

    atan()

    Function atan() calculates the radian of a tangent value.

    Arguments:

    • Tangent <number>

    Returns:

    • Radian <number>, ∈ [-PI/2, PI/2]

    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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