A particle P  starts from the point z0=1+2i,i=−1 . It moves first horizontally away from origin by 5 units  and vertically away from origin by 3 units to reach a point z1 . From z1  the particle moves 2  units in the direction of the vector i^+j^  and then it moves through an angle π/2  in anticlockwise direction on a circle with centre at origin, to reach a point z2 , the point z2  is given by :