Draw vectors representing the course of a ship that travels 9 75 miles on a course with bearing 30 10 75 miles on a course with bearing 330 11 25 miles on a course with bearing 135 12 25 miles on a course with bearing 225 13 Heading A boat is crossing a river that runs due north The heading of the boat the direction the boat is pointed is due east and it is moving through the water at 12 0 miles per hour If the current of the river is a constant 3 miles per hour find the true course of the boat to three significant digits 14 Heading A boat is crossing a river that runs due east The heading of the boat is due south and its speed is 11 0 feet per second If the current of the river is 2 feet per second find the true course of the boat to three significant digits 15 Heading An airplane is headed N 30 0 E and is traveling at 200 miles per hour through the air The air currents are moving at a constant 30 miles per hour in the direction N 60 0 W Find the true course of the plane That is find its speed with respect to the ground in miles per hour and its direction with respect to the ground Use three significant digits