Astronomers determine that a certain square region in interstellar space has an area of approximately 2.4 \times 10^72.4×10 7 (light-years)2, where a light-year is a unit of astronomical distance. assuming that this region is a square, then a single side of the square would be approximately how many light-years long?

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?