How to Use

Use ATAN2 with 3 how-to topics, including entering it through the Insert Function dialog box, typing the formula directly in a cell, and reviewing syntax and parameter details before use.

How-to Index

How-to Guide

1. Enter ATAN2 through the Insert Function dialog box

Entry point: Formula tab → Insert Function

1. Select the cell where you want to enter the formula.
2. Click the fx button in the formula bar, or click Insert Function on the Formula tab.
3. Search for ATAN2 in the Insert Function dialog box.
4. Select the function and click OK.
5. Enter the required parameters in the Function Arguments dialog box.
6. Click OK to finish entering the function.

Success Criteria

• Interface result: The target cell contains the ATAN2 formula and shows a calculation result.
• Next action available: You can continue editing parameters, copy the formula, or fill it down.

Tips While Using

• Make sure the parameters are numeric values rather than text.
• Use English commas as separators so the formula can calculate correctly.

2. Type the ATAN2 formula directly in a cell

Entry point: Cell → Formula bar

1. Select the cell where you want to enter the formula.
2. Type =ATAN2(...) directly in the cell or in the formula bar.
3. Press Enter to confirm the formula.
4. If you need syntax guidance, type =ATAN2( and press F1 to view help information.

Success Criteria

• Interface result: The cell returns a calculation result and the full formula remains visible in the formula bar.
• Next action available: You can drag the fill handle to apply the formula to other cells.

Tips While Using

• Confirm the parameter order before entering the formula.
• If the result looks incorrect, check whether referenced cells contain text, spaces, or blank values.

3. Review ATAN2 syntax and parameter details

Entry point: Formula tab → Insert Function

1. Click Insert Function on the Formula tab.
2. Enter ATAN2 in the search box.
3. Select the function and review the syntax: ATAN2(x_num, y_num).
4. Click the help link for the function to view more details.

Success Criteria

• Interface result: You can see the function name, syntax structure, and parameter details.
• Next action available: You can return to the worksheet and continue entering or editing the formula.

Tips While Using

• Focus on the parameter order and meaning when reviewing the syntax.
• An internet connection is needed when opening the help link.