Solve the trig word problem with double angles. Show your work, leave answer as the exact value. Thank you

Before Apollo 1 1 descended to the surface of the moon, it made one orbit at a distance of 3 miles above the surface of the moon. At one point in its orbit, the onboard guidance system measured the angles of depression to the near and far sides of a huge crater. The angles measured 25 to the near side of the crater, and 18 to the far side of the crater. Find the distance across the crater. 18 25 3 mi