# Calculation Survey

### 应用说明

This application employs the reverse traverse method used in construction.
Simply using this application onsite will relieve you from the effort of pointless calculations with a scientific calculator by calculating numbers for you.

Reverse Traverse Method
By inputting the XY coordinates of the instrument and backsight points, then inputting unspecified XY coordinates, the contained angle and distance will be calculated.
Elevation can also be calculated.