Documentation/Calc Functions/IMCOSH

Function name:
IMCOSH

Category:
Add-in

Summary:
Calculates the hyperbolic cosine of a complex number.

Syntax:
IMCOSH(ComplexNumber)

Returns:
Returns a text string giving the complex number that is the hyperbolic cosine of the complex number passed as argument.

Arguments:
ComplexNumber is a string (in quotation marks) representing a complex number in the form a+bi or a+bj, or a reference to a cell containing that string, whose hyperbolic cosine is to be determined. a and b are real numbers.
 * If ComplexNumber does not have an imaginary part (b equal to 0), the real part can be passed to IMCOSH as a number rather than a string.
 * If ComplexNumber is not a valid complex number, IMCOSH reports an invalid argument error (Err:502).

Details specific to IMCOSH function
For a complex number of the form a+bi, IMCOSH implements the following equation: However, IMCOSH determines if b=0 and in this case simply returns cosh(a).

Related LibreOffice functions:
IMCSCH

IMSECH

IMSINH

ODF standard:
Section 6.8.8, part 2

Equivalent Excel functions:
IMCOSH