1. Find the distance between the pair of points given a) P1(4,-2,1), P2(2,2,-3) use the formula | P1P2l - V(x1 - X2)2 + (y1 - yz)2+ (21 - Z2)2. 2. Give in the component form a vector v that is represented by AB, where a) A = (3, -2,4), B = (5,4, -1) I use the formula P1P2 = OP2 - OP1 = (x2 - X1,V2 - V1, =2 - Z1). 3. Find length and direction the vector of v, a) v = (1,-2, 2), b) v = 31 - 2j + k use the formulas [r| =1x2 + y2 + z2 and x y cos B = Z cos a w2/ x2 +y2+zz.' 2/ x2 +y2 +22. cosy = 2/ x2 ty2 + 2 2