[Tex/LaTex] $\sin{x}$ or $\mathrm{sin}\ x$

math-mode

I have been answering questions on Math S.E as well as Physics S.E.

Today I was pointed out for using \mathrm instead of using \sin by a fellow user.

So my question stands that, which of them is more visually appropriate for a reader and more acceptable:

1. $\sin t$

2. $\mathrm{sin}\ t$

as represented below:

sinsinati

To me, both of them look the same, what's the rendering difference (any helpful documentation)?

Best Answer

Compare:

\documentclass{article}
\begin{document}
\[ x\sin^{2} (t) + x\cos^{2} (t) = x\]
\[ x\mathrm{sin}^{2}\ (t) + x\mathrm{cos}^{2}\ (t) = x\]
\end{document}

enter image description here

in my opinion, the first option is much clearer.