1 two points p1 pi 0 and q0 -pi2 2 are given in the

Question

1. Two points P(1, π, 0) and Q(0, -π/2, 2) are given in the cylindrical coordinate system. Find the distance vector from P to Q. What is its length? What is the distance vector from Q to P? Express the distance vector from P to Q in terms of the distance vector from Q to P.