2. (21 points) Create a data file (using Notepad, perhaps) containing the values shown below (plus add 4 more lines of your choice) and then write a C++ . Read the data file (you can assume that it has exactly 8 lines with 3 numbers per line) . Calculate the three angles using the law of cosines (assume that the sides are valid) Write the results to an output data file. The results should include headings and 2 digits after the decimal point program as follows example is shown below for all values. An Print the program and the two data files Input data file 20 15 10 5 12 13 10 10 14.142 50 60 70 Sides a, b, and c for Triangle 1 Pick values for 4 more valid triangles Output data file: Side a 20.00 Side b 15.00 Side c Angle A(deg) 10.00 Angle B (deg) Angle C (deg) 46.57 104.48 28.96