IMCOSH function /text/scalc/01/func_imcosh.xhp
IMCOSH function hyperbolic cosine;complex number

IMCOSH function

Returns the hyperbolic cosine of a complex number. The hyperbolic cosine of a complex number can be expressed by:
IMCOSH equation IMCOSH(Complex_number) Complex_number is a complex number whose hyperbolic cosine is to be calculated.

=IMCOSH("4-3i")
returns -27.0349456030742-3.85115333481178i.
=IMCOSH(2)
returns 3.76219569108363 as a string.
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