Laplace transform of standerd functions

1)L[e^at]=1/(s-a)
2)L[e^-at]=1/(s+a)
3)L[sinat]=a/(s^2+a^2)
4)L[cosat]=s/(s^2+a^2)
5)L[sinht]=a/(s^2)
6)L[cosht]=s/(s^2-a^2)
7)L[t^n]=n!/s^(n+1)
8)L[t]=1/s^2