- #1
allamid06
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Homework Statement
This is an easy one, but keep in mind I'm kind of a newbie, anyway I can't figure out how to get the next formula...
tan(z) = (tan(a)+i tanh(b))/(1 - i tan(a)tan(b))
Homework Equations
This is the third part of an excercise, previous I proof the follow, -all using the definitions, of complex sin,cos, and tan, and definitions of real sinh,cosh, and tanh-...
cos(z)=cos(a)cosh(b)-i sin(a)sinh(b);
sin(z)=sin(a)cosh(b)+icos(a)sinh(b)
The Attempt at a Solution
I tried a lot of things, but couldn't get any way, maybe I'm missing something important, and that's what I fear.
I tried to replace tan(z) = sin(z)/cos(z) with the other equations but, I'm getting nothing.
Sorry for my english, lot of thanks for the help!