<prompt> Acha A 3, theta_1 na B 9, theta_2 katika viwianishi vya polar. Ikiwa theta_1 - theta_2 fracpi2, basi tafuta umbali AB.  <response>: Acha O iwe asili. Kisha angle AOB fracpi2, hivyo na Pythagoras,AB sqrt32 92 3 sqrt10.asyukubwa wa kitengo 0.5 cm;jozi A, B, O;A 3dir100;B 9 dir10;O 0,0;kuchoraA--O--B--mzunguko;chora-2,0--10,0;chora0,-1--0,4;leboA, A, NW;leboB, B, E;leboO, O, SW;asy 