Final answers: (a) sin(u + v) 1, and Because 1 1.4 (b) sin(u v) 0.6, and Because 0.6 0 Explanation: From the graph of y = sin x, the point at x = u and x = v both have y-values about 0.7, so sin(u) sin(v) 0.7. At x = u + v, the point is near the peak of the sine wave, so sin(u + v) 1, which is not equal to sin(u) + sin(v) 1.4. At x = u v, the point is around 0.6 on the y-axis, so sin(u v) 0.6, which is not equal to sin(u) sin(v) 0." this is wrong