# SIN function

This article describes the formula syntax and usage of the **SIN** function (function: A prewritten formula that takes a value or values, performs an operation, and returns a value or values. Use functions to simplify and shorten formulas on a worksheet, especially those that perform lengthy or complex calculations.) in Microsoft Excel.

## Description

Returns the sine of the given angle.

## Syntax

SIN(number)

The SIN function syntax has the following arguments (argument: A value that provides information to an action, an event, a method, a property, a function, or a procedure.):

**Number**Required. The angle in radians for which you want the sine.

## Remark

If your argument is in degrees, multiply it by PI()/180 or use the RADIANS function to convert it to radians.

## Example

The workbook below shows examples of this function. Inspect them, change existing formulas, or enter your own formulas to learn how the function works.

To work more in-depth with the example data in Excel, download the embedded workbook to your computer, and then open it in Excel.