V Part 1 of 3 This question has three parts. Answer each part correctly to get the next part. We will find a relationship between the direction cosines of a vector. Consider a general vector v -. What is the dot product 3 . i of 3 and the standard unit vector along the x-axis i? v . i= a Part 2 of 3 So v . i = a. Similarly, 3 . j = b and U . k = c. Now, write an expression for the magnitude of 7: = 11211 What is the magnitude of i? Question Help: Message instructor D Post to forum Submit Part MacBook Pro esc C G Search or type URL @ # $ % & N 4 5 J WX Question 9 Score on last try: 0 of 1 pts. See Details for more. > Next question Get a similar question You can retry this question below Let a = (0, 1, -5) and b - (3, 5, -3). Find the projection of b onto a. projab 30 50 -30 13 X 13 X 13 X Question Help: Video Message instructor Post to forum Submit Question MacBo esc C G Search or type U .- @ EA % W # N 4Question 9 Let a = (4, 2, -2) and b = (0, -1, 2). Find the projection of b onto a. proja b =