IMTAN in WPS on Windows: Introduction

IMTAN is a complex tangent function in WPS Spreadsheet; this guide covers 4 core tasks, with 4 available without membership and 0 membership-related items.

At a Glance

Metric	Value	Notes
Core tasks	4	Matches the number of rows in the How-to Index
Available without membership	4	Matches the number of Free rows in the index
Membership-related items	0	Matches the number of membership-related rows in the index
Version limits	None	Available in WPS Spreadsheet across supported versions

About This Feature

Overview

IMTAN is a built-in engineering function in WPS Spreadsheet that returns the tangent of a given complex number. It is suitable for complex-number calculations, engineering analysis, and formula-based modeling in spreadsheets.

Core capabilities include:

Enter the IMTAN formula directly in a cell to calculate the tangent of a complex number.
View syntax prompts while typing the function name.
Use the function with cross-sheet references and nested formulas.
Let results update automatically when referenced data changes.

Source: How to Use Formulas in Spreadsheets 2016

System Requirements

Item	Requirement
Operating system	A Windows device that can run WPS Office normally
App version	The latest version of WPS Office is recommended; WPS Spreadsheet supports formula features across current versions
Network	No mandatory internet connection is required for local formula calculation; internet access is needed for download, installation, and account services
Other	You need an editable spreadsheet file and permission to enter formulas in cells

Download & Installation

Item	Details
Official download	WPS Office Free Download
Installation	Download and install the WPS Office Windows client, then open WPS Spreadsheet to use formula features
Check after installation	Start WPS Spreadsheet and type `=IMTAN(` in a cell to confirm that the function prompt appears

Source: WPS Download Center

Compare with Alternatives

Dimension	WPS	Microsoft	Google	Notion	Adobe
Capability Summary	IMTAN can be entered directly in WPS Spreadsheet cells, with syntax prompts, cross-sheet references, nested formulas, and automatic recalculation.	Excel provides `IMTAN(inumber)` and returns the tangent of a complex number in x+yi or x+yj text format.	Google Sheets provides `IMTAN` to return the tangent of a specified complex number.	Notion formulas work with database properties, built-ins, and functions, but its official formula help does not present spreadsheet engineering functions such as IMTAN.	Acrobat supports calculated PDF form fields and field-based calculations, but it is not a spreadsheet formula environment.
WPS Advantages	Advantage: WPS keeps complex-number calculations in spreadsheet cells and supports cross-sheet references and automatic recalculation for ongoing data analysis.	Compared with WPS: Excel offers the same named function, and its official page focuses on syntax, argument format, and error behavior.	Compared with WPS: Google Sheets also supports the function, and its help page focuses on the function definition and syntax.	Compared with WPS: Notion is oriented to database formulas instead of cell-based engineering functions.	Compared with WPS: Acrobat is designed for PDF form calculations rather than spreadsheet IMTAN workflows.
Official Source	—	IMTAN function	IM.TAN (IMTAN)	Intro to formulas	Configure form field calculations in Acrobat

Overall Conclusion: For complex-number tangent calculations in spreadsheets, WPS, Microsoft Excel, and Google Sheets all provide direct function support. Notion is more suitable for database-property formulas, while Adobe Acrobat is more suitable for PDF form calculations, so WPS offers a more direct workflow for IMTAN-based spreadsheet tasks on Windows.

Use Cases

No.	Scenario	Suitable for	Main need	Solution
1	Complex trigonometric calculation	Engineering and research users	Need quick complex tangent results	Enter the IMTAN formula directly in a cell
2	Classroom demonstration	Teachers and students	Need to show syntax and changing results	Use syntax prompts and sample data during formula entry
3	Cross-sheet analysis	Finance and analysis users	Complex-number data is stored on different sheets	Reference cells from other worksheets in IMTAN
4	Combined formula modeling	Advanced spreadsheet users	One function is not enough for the full calculation chain	Nest IMTAN with other formulas
5	Dynamic result updates	Users maintaining recurring reports	Results need to refresh when source data changes	Use automatic recalculation to keep outputs updated

Membership & Benefits

Free vs WPS Premium

Capability	Free	WPS Premium
IMTAN function usage	✅ Available	✅ Available
Basic spreadsheet editing	✅ Available	✅ Available
Cloud storage	1 GB	20 GB
Template downloads	Limited	More advanced templates and broader access
PDF and advanced tools	Basic features	More advanced tools

Source: WPS Office pricing page

Recommendations

Scenario	Recommended plan	Why
You only need IMTAN and standard spreadsheet calculations	Free	The function itself has no membership restriction and is suitable for study and everyday calculation
You also need more cloud storage, templates, and broader office features	WPS Premium	Suitable for users who work across spreadsheets, PDFs, and multiple devices

WPS membership center: Subscribe now