7. A boat is sailing due east parallel to the shoreline at a speed of 20 miles per hour. At a given time the, the bearing to a lighthouse is S 68" E, and 30 minutes later the bearing is $ 52 E. Find the distance from the boat to the lighthouse at Boat Position 2. 8. Two planes leave an airport at the same time. One plane is flying 650 m.p.h at a bearing N 37 E, and the other plane is flying at 825 m.p.h at a bearing of N 53 W. How far apart are the planes after flying for 2 hours?