How to use left angle bracket(⟨) symbol in LaTeX?

Symbol/UnicodeLeft Angle Bracket/U+27E8
Type of symbolMathematical operator
Package (requirement)No
ArgumentNo
Latex command\langle
Example\langle → ⟨

You need to use the \langle command to write left angle brackets in latex. But if the equation is large, I would recommend using the \left\langle command.

\documentclass{article}
\begin{document}
   \[ \langle a+b \rangle \]
   \[ \left\langle \frac{x^2 + 1}{y^2 + 1} \right\rangle \]
   \[ \left\langle \frac{a + b}{x + y} \right\rangle \]
\end{document}

Output :

Use angle left bracket in latex.

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