def chirp_mass_and_total_mass_to_symmetric_mass_ratio(chirp_mass, total_mass):
    """
    Convert chirp mass and total mass of a binary to its symmetric mass ratio.

    Parameters
    ----------
    chirp_mass: float
        Chirp mass of the binary
    total_mass: float
        Total mass of the binary

    Return
    ------
    symmetric_mass_ratio: float
        Symmetric mass ratio of the binary
    """

    return (chirp_mass / total_mass) ** (5 / 3)