MORE EXERCISES For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. hyperbola 5 8 6 7 1+ 2 sin 0 3 r = 1 - 2 cos 0 r = 7 4 - 3 cos 0 4 - 4 sin 0 4 16 2 3 T - 7 + 2 cos 0 r - 4+ 3 cos 0 r = 10 + 10 cos 0 r=1 - cos 0 r(7 + 8cos 0) = 7 r(3 + 5sin 0) = 11 r(4 - 5sin 0) = 1 r(1 - cos 0) = 3