**(a) Eliminate the parameter to find a Cartesian equation of the curve.**

**(b) Sketch the curve and indicate with an arrow the direction in which the curve is traced as the parameter increases.**

**x = Sin 1/2 θ, y = cos 1/2 θ, - π ≤ θ ≤ π**

**Answer:**

2)

**(a) Eliminate the parameter to find a Cartesian equation of the curve.**

**(b) Sketch the curve and indicate with an arrow the direction in which the curve is traced as the parameter increases.**

**x = Sin 1/2 θ, y = cos 1/2 θ, - π ≤ θ ≤ π**

**Answer:**

2)