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Given two coordinate pairs, find the distance and direction between the two coordinate pairs

Given a coordinate, distance and direction, find the coordinate of the unknown (mystery) point

Determine unknown coordinates by using the best scenario of the data you currently have

Given a starting point coordinates (X, Y), adding both distance and angle for each station, calculate coordinates of the end point.

Using the Rise & Fall method, given a starting height with staff readings in-between, determine the last points height

Convert from one unit to the other