Collecting for loop output

I have a loop and I want to collect the output?

A are arrays 0:300

for i = 0:3:300

Fi = atan(-(A5(1,1+i)/A5(1,2+i)));

Theta = acos(A5(1,3+i));

Psi = atan(A3(1,3+1)/A4(1,3+i));

end

[Stephen23]

Duplicate:

https://www.mathworks.com/matlabcentral/answers/459328-for-loop-collecting-output