6)' Two vectors a and b have a 0 = 64 angle between them. The magnitude (length) of a is 142 and the magnitude of b is 207. (We can write this as la| = 140 and |b| = 207.) See Diagrams. a 64 a. Find a + b . (This means, what is the magnitude of the sum of the two vectors). Hint: Law of Cosines. a a +b b. What angle does a + b make with a? (Shown as ( on the diagram) Note, this angle is NOT half of 64. To find this you will need to use the Law of Cosines (or Law of Sines).7) Here are 3 vectors u, v, w. W In the following problems, please be sure to start your first vector so that the entire drawing will fit into the graph. Remember to draw the resulting sum of the vectors. a) On this graph (or your own graph paper), draw u + 30 ' b) On this graph (or your own graph paper), draw 20 + 2w