Satellites ka-1212  and sal-11  have spotted a ufo. scientists want to determine its distance from ka-1212  so they can later determine its size. the distance between the satellites is  900 km. if ka-1212's camera is focused on sal-11  , it must rotate 60° to see the ufo. if sal-11's camera is focused on ka-1212, it must rotate 75° to see the ufo. how far is the ufo from ka-1212?   round your answer to the nearest kilometer.