# How to change the scale of main text without affecting math text or viceversa?

I'm using libertine package for the main text of my work and I load fourier package before libertine in orther to get the math text with the Utopia font just because I like it. Typing

\documentclass{article}

\usepackage{fourier}
\usepackage{libertine}
\usepackage{amsmath, amssymb, amsthm, mathtools}

\begin{document}
s$\sin$nc$\cos$
\end{document}


results in

Predictably, the heights are different and I want to make them as similar as possible. A solution might be using the erewhon option of the newtxmath package, but some math symbols (like \emptyset) are so ugly in contrast to those from fourier. Also, according to the libertine documentation, there is an option called llscale but it's not actually defined in the .sty file.

I wonder if there's something that I can type in my preamble in orden to change the scale of the libertine font or the utopia font. I tried to read the .sty files of both packages to figure this out but I don't understand most of the things that are written in the files.

I'm using TeX Live 2017 on Windows.

\DeclareOptionX{llscale}{\renewcommand*{\LinuxLibertineT@scale}{#1}}

• Perhaps the recommendation is load the libertine package with the option llcscale=.95? (Where the number needs to be found by trial and error, or by actually measuring the x-height of the two fonts.) If so, better say that, then. Sep 9 '18 at 12:18
• Oh, I see. My guess is that the OP mistyped the option when searching for it – even though it is correctly spelled in the question. I thought it was 11scale at first, and did not find that either. 8-) Sep 9 '18 at 15:02
• I actually tried that option but I got the message c:\texlive\2017\texmf-dist\tex\latex\libertine\libertine.sty:210: LaTeX Error: Unknown option "llscale" for package "libertine". That's why I read the .sty. Sep 9 '18 at 18:23