L=x→0lim(sinx)msinxn=x→0limxm(sinx)mxmxnsinxnxn=x→0limxn−m
If n=m, then L=( a very small value near to zero )exactly zero =1
If n>m, then L=( a very small value near to zero )positive integer =0
If n<m, then L=( a very small value near to zero )negative integer =∞