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anonymous

  • one year ago

Find the rectangular coordinates of the point with the polar coordinates (3, 3/2 pi).

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  1. welshfella
    • one year ago
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    x = r cos theta y = r sin theta

  2. anonymous
    • one year ago
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    Yeah i got that part I just need help with after like what to plug and how to solve

  3. welshfella
    • one year ago
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    is that angle |dw:1440265941854:dw|

  4. anonymous
    • one year ago
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    What?

  5. welshfella
    • one year ago
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    the second item in the parentheses - the angle is it as i've drawn it?

  6. anonymous
    • one year ago
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    |dw:1440266149897:dw|

  7. welshfella
    • one year ago
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    Ok so what is the cosine of this angle/

  8. anonymous
    • one year ago
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    0?

  9. welshfella
    • one year ago
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    right and the radius is 3 so y coordinate is 380 = 0 now find 3 sin (3pi/2) and you have your answer

  10. anonymous
    • one year ago
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    -3

  11. anonymous
    • one year ago
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    Thank you!

  12. welshfella
    • one year ago
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    right yw

  13. welshfella
    • one year ago
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    (0,-3)

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spraguer (Moderator)
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