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Help me with magnitude and direction?

  1. Sep 18, 2013 #1
    1. The problem statement, all variables and given/known data


    Vector a has a magnitude of 4.3 m and is directed east. Vector b has a magnitude of 3.9 m and is directed 35° west of north. What are (a) the magnitude and (b) the direction (from east) of a + b ? What are (c) the magnitude and (d) the direction (from east) of b - a? Round your angles to the nearest degree.


    2. Relevant equations
    socahtoa? a^2+b^2=c^2
    sin(35)*3.9/4.3


    3. The attempt at a solution
    sin(35)*3.9/4.3
     
  2. jcsd
  3. Sep 19, 2013 #2

    berkeman

    User Avatar

    Staff: Mentor

    Welcome to the PF,

    On vector questions like this, it is helpful to draw a diagram showing the vectors and their addition/subtraction. Can you draw the diagrams and scan/upload them?
     
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