Ill. Solve. 6.) A plane flies 403 miles from Springfield to Rochelle with a bearing of N22E. Then it flies 620 miles from Rochelle to Bismark with a bearing of N30-W. Find the straight-line distance and bearing from Springfield to Bismark. (Round to the nearest tenth.) Use law of cosines 7.) Two boats leave a marina at 6 am. One travels at a bearing of N32W at 16 mph and the other travels at a bearing of N53E at 12 mph. How far apart are the two boats at noon that day? (Round to the nearest tenth of a mile.) Use law of cosines