how would you prove that:

sinh (x+y) = sinhx coshy + coshx sinhy ??

this is a little bit tricky (for me!) since it involves hyperbolic functions

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- Jan 23rd 2008, 03:44 PMnmanik90proving a hyperbolic trig identity
how would you prove that:

sinh (x+y) = sinhx coshy + coshx sinhy ??

this is a little bit tricky (for me!) since it involves hyperbolic functions - Jan 23rd 2008, 04:15 PMgalactus
It's not that bad. Actually, it seems easier to prove than the standard trig identity.

Use

- Jan 23rd 2008, 04:26 PMmr fantastic
- Jan 23rd 2008, 04:28 PMPlato
Here is another way to look at the question.

Add these two together.

Do you realize 2cosh(x)= and 2sinh(y)= ?