1) Consider the following vectors: a = (-4,-3,11), b = (-1,8,-3), and c = (7,13,-21). Show all work to determine the required operations. a) [2K] b) bxi [2K] c) Using the triple scalar product to verify whether the 3 given vectors are coplanar or not. Hint: If x, y, and z are coplanar, then (xx y)-z = 0 [3K] d) Vector projection of b onto a . Express the final answer using the exact values. [4K]