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Acosh

ACOSH Function

The ACOSH function in Excel returns the inverse hyperbolic cosine of a number. Essentially, it's the value whose hyperbolic cosine is the specified number.

Syntax:

ACOSH(number)
  • number: This is a required argument. It must be a numeric value equal to or greater than 1.

Examples:

  1. =ACOSH(1) would return 0, as the inverse hyperbolic cosine of 1 is 0.
  2. =ACOSH(1.5) would give a result approximately equal to 0.9624.
  3. =ACOSH(A1) would return the inverse hyperbolic cosine of the number in cell A1, provided the value in A1 is equal to or greater than 1.

Note: The ACOSH function is used in hyperbolic trigonometry, which, while less common than circular trigonometry, has applications in certain areas of mathematics and engineering.