Satellites KA-121212 and SAL-111 have spotted a UFO. Scientists want to determine its distance from KA-121212 so they can later determine its size. The distance between these satellites is 900 \text{ km}900 km900, start text, space, k, m, end text. From KA-121212's perspective, the angle between the UFO and SAL-111 is 60^\circ60 ∘ 60, degrees. From SAL-111's perspective, the angle between the UFO and KA-121212 is 75^\circ75 ∘ 75, degrees.