19. (3 pts) Consider the following rational function. x6 + 8x5 + 16x4 - 16x3 - 80x2 - 64x x(x + 4) (x - 2)(x+ 2)3 f (x ) = - x3 + x2 - 8x - 12 (x - 3) (x+ 2)2 (a) State any holes if they exist. (b) State any vertical asymptotes if they exist. (c) State the horizontal/slant/oblique asymptote(s) if they exist. 20. (6 pts) Given that sin 0 = -_ V3 4 - in quadrant III, find the exact values of the other 5 trigonometric ratios