clear handwritting

Question one: You have the three vectors: A= 1-2j+3k , B= 2i+ j-3k , C=31- j+2k a) Find the angle between A and B b) Find the area of the triangle formed by A and B c) Find the volume of the parallel-piped whose edges are A , B . C d) Find the product: (B x C) x A e) Find the values by which we have to multiply A, and B, to make A normal to B