<prompt> Pointi ina viwianishi vya mstatili -5,-7,4 na viwianishi vya duara rho, theta, phi. Tafuta viwianishi vya mstatili vya nukta na viwianishi vya duara rho, theta, -phi.  <response>: Tuna hiyoanzaalign-5 rho sin phi cos theta, -7 rho dhambi phi dhambi theta, 4 rho cos phi.mwishoalignKishaanzaalignrho dhambi -phi cos theta -rho sin phi cos theta 5, rho dhambi -phi sin theta -rho sin phi sin theta 7, rho cos -phi rho cos phi 4.endalignili viwianishi vya mstatili ni 5,7,4. 