(2 points) Resolve the following vectors into components: (a) The vector 7 in 2-space of length 5 pointing up at an angle of 2/3 measured from the positive x-axis. 7 = i + j (b) The vector w in 3-space of length 3 lying in the xz-plane pointing upward at an angle of 3/4 measured from the positive x-axis. W = i + j+ k