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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_total_sigma(self, C, std_intra, std_inter):
 """ Returns the total sigma term for the arbitrary horizontal component of ground motion defined by equation 18, page 150 """

        return np.sqrt(std_intra ** 2. + std_inter ** 2. + C['c_lny'] ** 2.)