Decision of triangle

The given program is intended for calculation of missing elements of a triangle if there are known not less than its three elements, one of which is the length of the side. For a basis the modes of the calculation of triangles are used:

- by the side and two angles;

- by two sides and one of opposite angles;  

- by two sides and an angle between them;  

- by three sides.    

Calculations with small angles should be made with the big care because accuracy of such calculations can be not great. Little change of an angle taking place as a result of a rounding off of last numeral, entails significant change of a sine at the angle close to 0 or 180, and cosine at an angle, close to 90 or 270. And since missing angles are calculated, they can just be in these borders.

This program independently selects a mode of the calculation, and at presence of redundant measurements reckons all possible variants. If there are not enough data, then a message will appear - Triangle has no solution.

Process of calculation of missing elements of a triangle is recommended to be constructed as follows:

To enter the initial data available onto the given triangle (Examples of data input). For calculation with these data to press the Calculate button or Calculate item in the Measurement menu. If necessary entered data it is possible to correct and again to press Calculate button.

Direction angles are calculated only in the event that coordinates of points have been entered (or are calculated).

The received results can be saved in the form of the calculated sheet (Report menu or the Report in Microsoft Word toolbar button). Thus, results of calculations can be seen at first in Word, and in the further this sheet can be saved or printed out by means of Word). For creation of such sheet it is necessary, that there was a template for the report.