# Change of Hyperbolic Functions

1) $Sinh{\text{ }}ix = iSinx$

2) $Cosh{\text{ }}ix = Cosx$

3) $Tanh{\text{ }}ix = iTanx$

4) $iSinhx = Sin{\text{ }}ix$

5) $Coshx = Cosix$

6) $iTanhx = Tan{\text{ }}ix$