Enter any two values in the text boxes and click the 'Calculate' button.

All the other values will be calculated. The precision (number of decimal places) is set using the precision list in the top of the window.

The 'Undo' button returns the values to the ones just before the 'Calculate' button was clicked. The 'Clear All' button clears all the input boxes.

Here are some key features of "Solution":

· Calculates lengths and angles if two are known.
· User defined number of decimal places