def summ(sin: float, cos: float) -> float:
    """
    Calculate the Z2n power value.

    Parameters
    ----------
    sin : float
        A float that represents the sine value.
    cos : float
        A float that represents the cosine value.

    Returns
    -------
    value : float
        A float that represents the Z2n power.
    """
    value = sin + cos
    return value