Question 4 Vectors v and w have magnitudes | | | =2 and | |w| | =11 and the angle between these vectors is 26 What is their dot product? (Give an answer accurate to two decimal places.) v . w Question Help: Message instructor Post to forum Submit Question MacBook Pro esc - C G Search or type URL @ # % & 2 4 5 Q W m tab R YQuestion 5 Let a = (1, -2, -5) and b = (-1, 4, -5). Find the angle between the vector (in radians) Question Help: Video Message instructor D Post to forum Submit Question esc - C G Search or t $ 0/.Question 6 Let a = (-3, 3, -2) and b = (0, 3, k). Find k so that a and b will be orthogonal. K = Question Help: Video Message instructor D Post to forum Submit Question K esc C G Search or t @ %