dsolve w/ 2nd order ode constant coeffients

[Frank Senkel]

I'm using dsolve to get the solution of the standard form of a 2nd order ode, as found in most math/controls texts. 

dsolve returns a very complicated solution in terms of exponentials and it's very difficult to hammer back into the usual sine/cosine form. If I solve it using laplace transforms, I get the usual simpler result. It seems like dsolve should provide an option for solutions via laplace transforms...

or am I missing something perhaps in the setup of the symbols?