waterborn5071 waterborn5071 24-05-2023 Mathematics contestada .(b) Given the vectors a= 2i – 5j - 2k and 7 = 1 - 4j+2k. (i) Calculate the vectorial product ã x 5. (ii) Find the unit vector in the direction of a. (iii) Find the magnitude of the projection of ä in the direction of b.