(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
(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