lim (cos(π/4 + h) - cos (π/4)) / h
h->0
lim (cos(π/4 + h) - cos (π/4))
h->0 _________________________
h
Somehow I ended up with cos(1).
2 answers
A store bought a toy rocket at a cost of $40 and marked it up 25%. Ronnie bought it and paid 10% sales tax. What was his total cost?