[填空题]
A plumber steps out ofeeo7n k//w x1ks l;5nbr fzgvd*4wh2y4v g*j, his truck, walks 50 m east and 25 m south, and then takes an elevator 10 m down into the basement of a building where a bad leak is occurring. What is the displacement of the plumber relative j2r,d fyvhz*44g*vg wto his truck? Give your answer in components, and also give the magnitude and angles with the x axis in the vertical and horizontal planes. Assume x is east, y is north, and z is up.
The result is that the displacement is m , at an angle of $^{\circ}$ South of East, and $^{\circ}$ Below the Horizontal.
