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anonymous

  • one year ago

Determine two pairs of polar coordinates for the point (4, -4) with 0° ≤ θ < 360°.

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  1. anonymous
    • one year ago
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    @Loser66 please come back lol I don't know how to do these.

  2. anonymous
    • one year ago
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    |dw:1437841905162:dw|

  3. Loser66
    • one year ago
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    |dw:1437841853187:dw|

  4. Loser66
    • one year ago
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    knock knock!!! ???

  5. anonymous
    • one year ago
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    sqrt(32) = 5.65?

  6. Loser66
    • one year ago
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    yes, but should let it as \(4\sqrt2\) , ok?

  7. anonymous
    • one year ago
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    ok

  8. shamim
    • one year ago
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    Do u know Tan(theta)=y/x

  9. shamim
    • one year ago
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    Theta=?

  10. anonymous
    • one year ago
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    theta = (y/x)/tan?

  11. Loser66
    • one year ago
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    Now, positive angle: If I go opposite way of that length, I got that point. What is the angle?? |dw:1437841980575:dw|

  12. Loser66
    • one year ago
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    ok, let shanim take over.

  13. anonymous
    • one year ago
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    oh lol with my points haha -4/4 = -1 -1 = tan(theta) not sure what to do after this

  14. shamim
    • one year ago
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    Theta=tan^-1(-1)=?

  15. anonymous
    • one year ago
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    i got -pi/4 which in degrees would be -45

  16. anonymous
    • one year ago
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    is that right?

  17. shamim
    • one year ago
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    Do u know -45 is equivalent to the angle 360-45=?

  18. shamim
    • one year ago
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    Yes u r right!

  19. anonymous
    • one year ago
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    315

  20. shamim
    • one year ago
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    -45 degree is right answer!!

  21. shamim
    • one year ago
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    315 degree is also a right answer

  22. anonymous
    • one year ago
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    I need two coordinates though and those aren't together in an answer

  23. anonymous
    • one year ago
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    Want me to post the answer choices

  24. anonymous
    • one year ago
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    Here: (4 sqrt(2), 45°), (-4 sqrt(2), 225°) (4 sqrt(2), 135°), (-4 sqrt(2), 315°) (4 sqrt(2), 225°), (-4 sqrt(2), 45°) (4 sqrt(2), 315°), (-4 sqrt(2), 135°)

  25. anonymous
    • one year ago
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    hi loser66

  26. Loser66
    • one year ago
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    @twistnflip still need help?

  27. anonymous
    • one year ago
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    yeah I can't figure out which answer it is supposed to be, I thought -45 and 315 but those aren't together in any of the choices

  28. Loser66
    • one year ago
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    |dw:1437842744111:dw|

  29. anonymous
    • one year ago
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    135

  30. Loser66
    • one year ago
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    ok, that is if you go there, but the opposite way of that direction, you get (4,-4) Hence the first one is (\(-4\sqrt{2}, 135\)), ok?

  31. Loser66
    • one year ago
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    Now, go directly, not opposite anymore. |dw:1437842950862:dw|

  32. anonymous
    • one year ago
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    yep and then the other one is 4 * sqrt(2), 315

  33. Loser66
    • one year ago
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    woohooo!! easy, right?

  34. anonymous
    • one year ago
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    Yup!

  35. anonymous
    • one year ago
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    yeah I am going to close this question, thanks so much guys I have a few more. I'll be back.

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