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Points of Intersection.

  1. Jul 10, 2011 #1
    1. The problem statement, all variables and given/known data



    I need to find the 2 points of intersection (in polar form) of the two curves.

    I know just by looking that the origin will be one of the points, (0,0)

    3. The attempt at a solution

    I have approached this two different ways,

    1. set them equal to each other and tried to simplify.


    Which approach should i use?
     
    Last edited: Jul 11, 2011
  2. jcsd
  3. Jul 10, 2011 #2
    OK, i used tanθ=sinθ/cosθ and i solved for θ

    i can substitute back in to get my corresponding (r,θ) r point and i should have my point right?
     
    Last edited: Jul 11, 2011
  4. Jul 10, 2011 #3

    SammyS

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    Right. That gives you one of the points. I'm not quite sure how you came up with your answer of θ=π/4 , so it's difficult to suggest how you should come up with the second point.
     
  5. Jul 10, 2011 #4
    Is that right?


    I think that is my polar coordinate where it intersects
     
    Last edited: Jul 11, 2011
  6. Jul 10, 2011 #5

    SammyS

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    Your first post states that you need to find the 2 points of intersection.

    For what other value of θ, is tan(θ) = 1 ? What is the period of the tangent function?
     
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