1. The problem statement, all variables and given/known data lim x^2-17x+72 / sin (x-9) x>9 2. Relevant equations sinx/x = 1 3. The attempt at a solution i divided both top and bottom by x.. and then im stuck on where sin(x-9)/x.. does it equal x-9? and does sin(x-y) = sin(x)-sin(y)?