What is IMCOSH function in Excel? IMCOSH function is one of Engineering functions in Microsoft Excel that returns the hyperbolic cosine of a complex number in x+yi or x+yj text format. Syntax of IMCOSH function IMCOSH(inumber) The IMCOSH function syntax has the following arguments. Inumber: A complex number for which you want the hyperbolic cosine. IMCOSH […]