anonymous
  • anonymous
Please help! In need of assistance! Convert the rectangular equation to a polar equation. Express r in terms of θ. 5x+y=9 r=?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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mathmale
  • mathmale
Rectangular coordinate to Polar coordinate Conversion formulas: x=r cos theta, y=r sin theta. try substituting these for x and y in your original equation.
anonymous
  • anonymous
so would that be 5(r cos θ) + y(r cos θ) = 9 ?
mathmale
  • mathmale
Yes. Now solve your equation for r in terms of the angle, theta.

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anonymous
  • anonymous
Sorry, I meant sin for y not cos.
anonymous
  • anonymous
And my final result that I got was 9 / (5 cos θ + 1 sin θ).
mathmale
  • mathmale
Glad you've realized that.
mathmale
  • mathmale
Best to type that as an equation / formula: Begin with "r="
anonymous
  • anonymous
Yes. That's what I wrote as my final answer on my scrap paper while working out the problem. I just exempted the r = part when I was typing it on here.
anonymous
  • anonymous
Thank you for your help BTW.
mathmale
  • mathmale
My pleasure!

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