I plan to do something 'along the lines of' aerospace engineering. Since you said previously that you yourself think that Matlab is industry standard, I'll dabble into that while doing other more commonly used programs like C++ and some C#.
Depends on what field you want to specialise in. I do computational fluid dynamics (CFD), which is very intensive on numerical calculations. A lot of open-source and academic codes are written in C/C++ or Fortran as they need to be highly optimised and so need to be written in a low-level language (Matlab would be too slow). However, Matlab is typically preferred in industry due to its ease of use. But as pointed out above, Matlab licences aren't cheap, so Python is usually seen as a more sustainable option. Where I work, a lot of Matlab codes are slowly being converted over into Python where possible to reduce the need for licences.
Regardless, it's good to be skilled in multiple languages. If you can get familiar with Python, C, etc, then Matlab is super easy to learn since it's a very high-level language. The main thing I like about Matlab is that arrays start at 1, whereas most other languages start at 0 (I know 99.9% of people will disagree with me, but I just stubbornly refuse to change my mind).