Use the given parameters to answer the following questions. If you have a graphing device, graph the curve to check your work. x=cos(3θ) y=9sin(θ) (a) Find the points on the curve where the tangent is horizontal. (smaller y-value) ) (larger y-value) (b) Find the points on the curve where the tangent is vertical. (± ) (smallest y-value) (≤ ) (largest y-value)