The following observations were made in an open-traverse compass survey: The whole circle bearing of Line AB is 144°30' (S 35°30' E), and the included angles measured clockwise at stations B and C are 105°20' and 265°50' respectively. What is the bearing of Line CD?

In survey work using a total station with reflector measurements, which of the following sequence of temporary adjustments must be performed at a station?

While carrying out a total station survey on one bank of a 250 m wide river, it is necessary to plot electric transmission posts on the opposite bank. No provision exists for crossing the river and the posts are inaccessible. In which mode should the survey work be done?