【what] does it mean by the term" approximate to four decimal place accuracy" hey I have a question. What does it mean by the term " approximate to four decimal place accuracy". For instance, I want to approximate cos(pi/5) to four decimal place using the macluarin series. The actual value of cos(pi/5) is: 0.809016994 Does this mean that the first five decimal place of the value I obtain from the series must match exactly as 0.80901? What about the rounding? What if I got something like 1)0.809071 2) 0.809014 Do they still fit into the problem?