Danny, the great thing about vectors expressed in this trigonometric form is that the magnitude and direction angle are given within the expression. The direction angle is simply pi/3. The magnitude is 8. This is because (cos(pi/3)i + sin(pi/3)j) is a unit vector in the direction pi/3. A unit vector has length 1, so multiplying this unit vector by 8 creates a vector which has a length 8 and points in the direction of pi/3.