tried to be nice and provide the answers, but someone said "which part b"... here you go. Please solve all of them and explain thoroughly, especially part b, because I don't remember how to do Matrix Algebra Method. ignore the comment under the image.

Only part b needs to be answered, but please explain thoroughly. the answers will be posted as well, to make the problem easier. I don't remember how to do the Matrix Algebra Method, so please explain details that may be forgettable. Thank

2. A force F = 200 1b is applied to a two-bar truss as shown. FBD F- F - 60 F1 F 2 X The forces Fi and F2 satisfy the following system of equations: 0.866 F1+ 0.707 F2 = 200 0.5 F1 - 0.707 F2 = 0 a) Write the system of equations and in the matrix form AF = b, where F= In other words, find matrices A and b. b) Find Fi and F2 using the matrix algebra method. Perform all matrix computation by hand and show all steps. c) Find F1 and F2 using Cramer's rule