What is the syntax for IMCSC in Excel?

The syntax for IMCSC is: =IMCSC(inumber)

What are common errors with IMCSC?

#VALUE! if not a valid complex number

How do I use the IMCSC function?

To use IMCSC, type =IMCSC( in a cell and provide the required arguments. Excel will show you the syntax and parameter hints as you type. Make sure to close the parentheses and press Enter to execute the function.

Why is IMCSC not working in my Excel?

Common issues with IMCSC include #VALUE! if not a valid complex number. Start by checking the syntax =IMCSC(inumber), then verify each referenced cell or range.

Engineering

IMCSC Function in Excel

Returns the cosecant of a complex number.

Syntax

=IMCSC(inumber)

Arguments

inumber (required): A complex number in x+yi or x+yj format

Examples

=IMCSC("1+2i") - Cosecant of 1+2i - Result: 0.228-0.141i

IMCSC in technical sheets

Document units in adjacent cells — many engineering functions require exact unit strings.
Use [CONVERT](/functions/convert/) for unit changes before specialized formulas.
Validate inputs with [ISNUMBER](/functions/isnumber/) and range checks.

Common errors

#VALUE! if not a valid complex number

Use cases

Complex number calculations
Engineering

Frequently asked questions

What is the IMCSC function in Excel? IMCSC returns the cosecant of a complex number. The syntax is =IMCSC(inumber). Typical use cases include complex number calculations, engineering.
How do I use the IMCSC function? To use IMCSC, type =IMCSC( in a cell and provide the required arguments. Excel will show you the syntax and parameter hints as you type. Make sure to close the parentheses and press Enter to execute the function.
Why is IMCSC not working in my Excel? Common issues with IMCSC include #VALUE! if not a valid complex number. Start by checking the syntax =IMCSC(inumber), then verify each referenced cell or range.

Editorial review

Reviewed by Excel.Directory Editorial Team. Updated May 2026.