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Vector angle in a standard x-y coordinate system?

  1. Sep 20, 2008 #1
    A certain vector has x and y components that are equal in magnitude. Which of the following is a possible angle for this vector in a standard x-y coordinate system?

    30°
    180°
    90°
    60°
    45°

    Is this problem too simple or am i missing something? if the x and y components are equal in magnitude, than their vector will be the hypotenus...in this case being any of the above?

    Thank you
     
  2. jcsd
  3. Sep 20, 2008 #2

    Redbelly98

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    No, not any of the above. For most angles listed, the x and y components are unequal in magnitude.
     
  4. Sep 20, 2008 #3

    hage567

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    It's asking about the angle.
     
  5. Sep 20, 2008 #4
    so if one lies on the x plane and the other on the y plane the angle could be 45?
     
  6. Sep 20, 2008 #5

    LowlyPion

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    If they are equal, then either of the minor angles will be equal, which means ...
     
  7. Sep 20, 2008 #6
    cos()=sin()...()=45
     
  8. Sep 20, 2008 #7

    Redbelly98

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    Yes, 45°.

    By the way, what is this "x plane" and "y plane"? Everything is in the xy plane.
     
  9. Sep 20, 2008 #8
    Originaly i pictured two vectors of equal magnitued at different points on the xy plane.
    thank you all
     
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