Write a FORTRAN 77 code that allows you to:

a) calculate and print in a matrix form the element stiffness matrix for a 2D truss element residing at an angle of 30 relative to the global x-axes;

b) and then if the above element is connected to global nodes 2 and 3 of a 2D truss, write a subroutine that places the element stiffness matrix in the proper locations of a 10x10 global stiffness matrix. Print the global stiffness matrix assuming that all other elements are zero.

PLEASE WRITE THE CODE ON FORTRAN 77 AND SHOW THE RESULTS OBTAINED ON THE COMMAND PROMPT OF FORTARN 77.