Given “1+1.5707963267949i” as input, the function returns “-3.9E-15-0.85092i” as output.

Explanation

The complex hyperbolic secant function is the reciprocal of the complex hyperbolic sine function.

In Excel, the function’s output is equivalent to the following formula.

Definition of complex hyperbolic secant function.

Definition of complex hyperbolic secant function.

Definition of complex hyperbolic secant function.

Definition of complex hyperbolic secant function.

Definition of complex hyperbolic secant function.

Excel IMCOSH function