# \rangle

The ⟩ symbol (Mathematical right angle bracket, U+27E9), written as \rangle in LaTeX math mode.

https://texform.dev/latex/symbols/rangle

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Delimiters](https://texform.dev/latex/topics/delimiters) |
| Packages | base |
| Allowed mode | math |
| Glyph | ⟩ |
| Unicode | U+27E9 MATHEMATICAL RIGHT ANGLE BRACKET |
| Delimiter |  |

## Syntax

```latex
\rangle
```

Takes no arguments.

## Common tasks

### How to write a ket

```latex
\lvert\psi\rangle
```

[Open in Playground](https://play.texform.dev/?input=%5Clvert%5Cpsi%5Crangle)

### How to write an inner product

```latex
\langle\phi\mid\psi\rangle
```

[Open in Playground](https://play.texform.dev/?input=%5Clangle%5Cphi%5Cmid%5Cpsi%5Crangle)

### How to write a stretchy right angle bracket

\rangle is the right fence; pair it with \langle.

```latex
\left\langle \frac{a}{b} \right\rangle
```

[Open in Playground](https://play.texform.dev/?input=%5Cleft%5Clangle+%5Cfrac%7Ba%7D%7Bb%7D+%5Cright%5Crangle)

## Usage frequency

4.21% of formulas in the measured corpus contain this entry, rank 25 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+27E9 (MATHEMATICAL RIGHT ANGLE BRACKET).