Excel's list of functions includes a number of the most common trig functions. These include the SIN function which gives you the sine of an angle measured in radians.

**Note:** Since most angles are measured in degrees, you might need to convert your data to radians using the RADIANS function.

The syntax for the SIN function is:

### = SIN ( Number )

Number - the angle in radians being calculated.

### Example: Using Excel's SIN Function

- Enter the following data into cell D1: 0.593412
- Click on cell E1 in the spreadsheet - this is where the function will be located.
- Click on the
*Formulas*tab of the ribbon menu. - Choose
**Math & Trig**from the ribbon to open

the function drop down list. - Click on
*SIN*in the list to bring up the function's dialog box. - In the dialog box, click on the
*Number*line. - Click on cell D1 in the spreadsheet.
- Click OK.
- The answer 0.559193 should appear in cell E1.
- When you click on cell E1 the complete function
**= SIN ( D1 )**appears in the formula bar above the worksheet.

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