1. find the angle between these vectors a. u= (0, 1, 5) v = (2, 3, 5) b. u = (0, 1, 6) v = (1, -2, -1) 2. Verify the Cauchy-Scwartz inequality for these vectors a. u =(3, 4, - 2) y v = (4, -3,0) b. u = (1, 2, 6) y v = (2,6,8) 3. Verify Pitagoras theroem for these vectors a. u =(4,0) y v = (1, 1)