A ship sails east from a harbor for 16 nautical miles. It then sails in the direction of N 55 E for 18 nautical miles. How far is it then from the harbor? (Round to the nearest whole number.)
[the component East (x axis)]=16+18*cos 55°---------> 26.32 miles
[the component North (y axis)]=18*sin 55°--------------> 14.74 miles
applying the Pythagorean theorem we can know the distance from the harbor d²=26.32²+14.74²---------> d²=910.01--------> d=√910.01--------> d=30.17 miles
