The TAN function is a Math and Trigonometry function, and its purpose is to return a tangent of a number or angle. In this post, we show you how to use the TAN function in Microsoft Excel.

Drag the square down the column to allow Excel to calculate the remaining tangent values without entering new formulas into the function window.

Integration into Existing Sheets If a business or other organization is using spreadsheet data managed within Excel, using the chart function within Excel aids integration of the data.