A plane has an airspeed of 125 km/h. It is flying on a bearing of 74° while there is a 27 km/h wind out of the northeast (bearing 225°). What are the ground speed and the bearing of the plane? The ground speed is ☐ km/h. (Round to the nearest tenth as needed.)

A boat is traveling due east parallel to the shoreline at a speed of 10 miles per hour. At a given time, the bearing to a lighthouse is S70E, and 15 minutes later the bearing is S63E (see figure). The lighthouse is located at the shoreline. What is the distance from the boat to the shoreline?

If two ships are 70 nautical miles apart on the ocean, what is the great circle distance between them in radians?