CPM Homework Help : CALC Problem 9-71

For each set of parametric equation in problem 9-70, describe what part of the curve is sketched in each case when $−2 ≤ t ≤ 2$ .

Hint:

The curve will start at $(\operatorname{cos}(–2)$ , $\operatorname{sin}(–2))$ , pass through $(\operatorname{cos}(0)$ , $\operatorname{sin(0))}$ , and end at $(\operatorname{cos}(2)$ , $\operatorname{sin}(2))$ .
Evaluate and graph these points.
The curve will start at $(\operatorname{cos}(–4)$ , $\operatorname{sin}(–4))$ , pass through $(\operatorname{cos}(0)$ , $\operatorname{sin(0))}$ , and end at $(\operatorname{cos}(4)$ , $\operatorname{sin}(4))$ .
Evaluate and graph these points.