You have three options.
1. Use evalin or assignin correctly to put the variable into the base workspace.
2. Change your function to a script, and just directly work in the calling workspace.
3. Return everything you want your function to return, as an argument.
e.g.
function [cosine_result, sine_result, tangent_result] = trigfcns(angles)
cosine_result = cos(angles);
sine_result = sin(angles);
tangent_result = cosine_result ./ sine_result;
Then call your function like:
[cosses, sines, tans] = trigfcns([45 31 91 64]*pi/180);
From a programming quality/best practice point of view, the advice would be to just use the 3rd option. - Using varargout & nargout as ways of not returning optional output.
