Do we have to do L'Hopital again? Since sinx/x =1
and then subtracting 1 gets you 0. so 0/0 ?
or is the limit just 0?
Its still 0/0 not 0 .. We need to use L'Hospital's Rule two times again to evaluate the limit .. Or we can use the infinite series to evaluate it .. Your final answer should be $\displaystyle \frac{-1}{18}$ ..