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v4.2
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v4.2

    acos()

    Function acos() calculates the radian of a cosine value.

    Arguments:

    • Cosine <number>, ∈ [-1, 1]

    Returns:

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

    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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