9.2 Graf Sinus, Kosinus dan Tangen 1. y = sin x, 0 ≤ x ≤ 360 o o x 0 90 180 270 360 o o o o o sin x 0 1 0 -1 0 2. y = kos x, 0 ≤ x ≤ 360 o o x 0 90 180 270 360 o o o o o kos x 1 0 -1 0 1