So, I tried to place the data in a M-file title fprintfdemo. I don't know how to use this information to calculate theta as a function of Z in a range of 0-180 degrees. Please show all MATLAB steps. Just to clarify what I did is in the first picture, but the question I am trying to solve is the second picture.

function fprintfdemo x = [2.306 2.506 2.706 2.906 3.106 3.306 3.506 3.706 3.906 4.106 4.306 4.506 4.706 4.906) ; syms theta y = cos(theta); y = [-0.28790411 -0.20835944 -0.01087653 0.13355604 0.20852146 0.33856223 0.22623419 0.06181941 0.00567675 0.00573251 0.00155089 -0.00125758 0.00076836 -0.00213463] ; z = [x;y] ; fprintf(' x y '); fprintf('%50 %10.3f ',z); acos(z) 2. Read the following data into a Matlab program to calculate the angle values of 0 in range of O- 180 as a function of Z, and write the values of Z and into to an output file. Z(nm) cos 0 2.30600000 -0.28790411 2.50600000 -0.20835944 2.70600000 -0.01087653 2.90600000 0.13355604 3.10600000 0.20852146 3.30600000 0.33856223 3.50600000 0.22623419 3.70600000 0.06181941 3.90600000 0.00567675 4.10600000 0.00573251 4.30600000 0.00155089 4.50600000 -0.00125758 4.70600000 0.00076836 4.90600000 -0.00213463 (Requirement: paste the calculation results and the source code. Hint: the matlab command to calculate inverse cosine is acos)