<div class="raw-html-embed">
    <p>The <b>ATAN</b> function is one of the <a href="../../docs/userguides/spreadsheet_editor/InsertFunction.aspx#mathtrigonometry" onclick="onhyperlinkclick(this)">math and trigonometry functions</a>. It is used to return the arctangent of a number.</p>
    <h5 class="pt8">Syntax</h5>
    <p><b><em>ATAN(number)</em></b></p>
    <p>The <b>ATAN</b> function has the following argument:</p>
    <table>
        <tbody>
            <tr>
                <th style="background-color: #f4f4f4" width="150ch"><b>Argument</b></th>
                <th style="background-color: #f4f4f4"><b>Description</b></th>
            </tr>
            <tr>
                <td><b><em>number</em></b></td>
                <td>The tangent of the angle you wish to find, a numeric value entered manually or included into the cell you make reference to.</td>
            </tr>
        </tbody>
    </table>
    <h5 class="pt8">Notes</h5>
    <p><a href="../../docs/userguides/spreadsheet_editor/InsertFunction.aspx#howtoapplyfunctions_block" onclick="onhyperlinkclick(this)">How to apply</a> the <b>ATAN</b> function.</p>
    <h5 class="pt8">Examples</h5>
    <p>The figure below displays the result returned by the <b>ATAN</b> function.</p>
    <p><img alt="ATAN Function" src="https://static-helpcenter.onlyoffice.com/atan_fbdcf1cca0.png"></p>
</div>

ATAN function

Docs

ATAN function

Syntax

Notes

Examples

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