Engineering

IMSINH Function in Excel

Returns the hyperbolic sine of a complex number.

Syntax

  • =IMSINH(inumber)

Arguments

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

Examples

  • =IMSINH("1+2i") - Hyperbolic sine of 1+2i - Result: -0.489+1.403i

IMSINH 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
  • Signal processing

Frequently asked questions

  • What is the IMSINH function in Excel? IMSINH returns the hyperbolic sine of a complex number. The syntax is =IMSINH(inumber). Typical use cases include complex number calculations, engineering, signal processing.
  • How do I use the IMSINH function? To use IMSINH, type =IMSINH( 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 IMSINH not working in my Excel? Common issues with IMSINH include #VALUE! if not a valid complex number. Start by checking the syntax =IMSINH(inumber), then verify each referenced cell or range.

Editorial review

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