That’s why many document processors like LaTeX support source code to use a hat symbol. However, many users don’t know the correct code and may get errors. So, in this tutorial, we will include different ways to write and use the hat symbol in LaTeX.

## How to Write and Use the Hat Symbol in LaTeX?

It’s very easy to add the hat symbol to your LateX document because it only requires the following source code:

$$\hat{i}$$

$$\vec{V} = |a|\hat{a}$$

\end{document}

**Output**

There are other variants of the hat symbol in LateX, and you need different packages to represent them. So let’s use physics \usepackage and \vu{} code:

**Output**

You can use \vu*{} rather than the above one to get the italic character with the hat symbol:

**Output**

Similarly, you can create long expressions using the $$ in the source code:

\begin{document}

$$\vec{a}=1\hat{i}+2\hat{j}+3\hat{j}+4\hat{k}$$

\end{document}

**Output**

You can also use the hat symbol in the text mode using the \^{} code, and here is the basic example:

**Output**

In some languages, hat symbols are used as circumflexes or carets. For example, let’s translate the word ‘Inquest’ into French as it includes a hat symbol:

**Output**

If you want to use this hat symbol over one letter or word, please use the following source code:

$$\widehat{LinuxHint}$$

\end{document}

**Output**

## Conclusion

Many mathematical questions and equations in physics require hat symbols to denote a unit vector. As a result, we have explained different ways to write and use the hat symbol in LaTeX. You can also use the hat symbols with different packages, which we have already mentioned in the above information.