In the following questions report both the degree and the radian form of the formula.

(a) Suppose the bicycle wheel of this section was of radius 20cm, and turning at π/3 radians per second. What then would be the formula for y in terms of t? Again we start with y=0 at t=0, and suppose the stick begins by moving upwards.

(b) Same wheel as in (a) but with a different starting configuration. Start with y=0 at t=0, but suppose the stick begins by moving downwards. Start with a rough sketch of the graph, and then find the formula.