Answers to homework problems:

Chapter 1.
 2)  26 miles 385 yards = 26 * 5280ft + 385 * 3ft = 138 435 ft = 
                        = 138435ft * 1 m /3.281ft = 42 192.93 m

 6)  jeroboam = 0.792 gallons = 0.792 gallon * 3.785 gallons/liter=
              =2.9977 liters ie approximately 3 liters
       1 jeroboam = 3 liters = 3 liters/1.5 liters = 2 magnums

13) distance = sqrt (35^2 + 72^2)= sqrt ( 6409 ) = 80.05 km
    tan(angle)=35km/72km =.45 radians = 25.7 degrees
   
27) A+B : magnitude = sqrt (48^2 + 48^2) = 67.88
          direction  = SW
    A-B : magnitude - sqrt (48^2 + 48^2) = 67.88
          direction  = NW