Assignment 1: Fun With Triangles

For this assignment you will write a program to calculate the perimeter of a triangle, area of a triangle, and interior angles in the triangle given the lengths of its three sides. This will require writing three functions:

Calculate perimeter given the three sides
Calculate area given the three sides
Calculate one angle given three sides.  The angle should be the one opposite the first side (of the three parameters you're passing to the function).  You'll need to call this function three times.
Your program should prompt the user to enter three numbers representing the length of each side of the triangle, and then pass these numbers as the parameters to each function. All three functions should return a result and that result should be printed.  As noted above, you'll need to call one function three times to get three answers.  Your angles should be printed in  degrees—since Python uses radians, for its trig functions, you might need to convert from radians to degrees before printing.