If the index lies to the right of zero it is said to be 'off the arc', and all observed angles will be too small by the amount of the Index Error and therefore must be added.
Ukuba isalathisi silalela ngakwicala lasekunene kwiqanda kuthiwa ingaphandle kwesazinge, kwaye zonke iimbombo ezijongiweyo ziyakuba ncinci kakhulu ngokomlinganiselo wempazamo salathisi ngapha koko mayidityaniswe.