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Vector A has y-component Ay= +12.0 . A makes an angle of 32.0

  1. Sep 30, 2012 #1
    Vector A has y-component Ay= +12.0 . A makes an angle of 32.0 degrees counterclockwise from the + y-axis.

    What is the x - component of A?

    What is the magnitude of A?


    How can I do this?
     
  2. jcsd
  3. Sep 30, 2012 #2
    Re: Vectors

    You draw it, and then use trigonometry. (Always draw the problem!) Because you have learnt about decomposition about vectors into components, right? This is more or less the same problem.
     
  4. Sep 30, 2012 #3
    Re: Vectors

    I don't understand the + y - axis
     
  5. Sep 30, 2012 #4
    Re: Vectors

    That would be the positive y axis, as in, going upwards, should you choose to define upwards as being positive.

    Then, like Hypersphere said, you always need to draw a diagram, and take the proper trigonometric steps to figure out the components and magnitude.
     
  6. Sep 30, 2012 #5
    Re: Vectors

    Can you locate the y axis and then tell what part of it is positive? It should be pretty easy to tell. And from there you can figure out where to draw the vector.
     
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