anonymous
  • anonymous
Determine two pairs of polar coordinates for the point (2, -2) with 0° ≤ θ < 360°.
Mathematics
chestercat
  • chestercat
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MTALHAHASSAN2
  • MTALHAHASSAN2
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anonymous
  • anonymous
would it be (2 square root of 2, 135°), (-2 square root of 2, 315°)?
MTALHAHASSAN2
  • MTALHAHASSAN2
wait what are you trying to find??

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anonymous
  • anonymous
2 pairs of polar coordinates
MTALHAHASSAN2
  • MTALHAHASSAN2
oh ok
MTALHAHASSAN2
  • MTALHAHASSAN2
give me a sec
MTALHAHASSAN2
  • MTALHAHASSAN2
MTALHAHASSAN2
  • MTALHAHASSAN2
@nanaruiz123 do you still need help??
anonymous
  • anonymous
ya i dont really get how to do this lol
MTALHAHASSAN2
  • MTALHAHASSAN2
@dtan5457 can you plz help
MTALHAHASSAN2
  • MTALHAHASSAN2
MTALHAHASSAN2
  • MTALHAHASSAN2
MTALHAHASSAN2
  • MTALHAHASSAN2
@nanaruiz123 this is the hard question thou
anonymous
  • anonymous
ya its pre-calc
anonymous
  • anonymous
converting rectangular (x,y) to polar (r,θ) : \[r=\sqrt{x^2+y^2}\] \[\theta=\tan^{-1} (\frac{ y }{ x})\] \[r=\sqrt{2^2+(-2)^2}\]= \[2\sqrt{2}\] \[\theta=\tan^{-1} (\frac{ -2 }{ 2})=315\] \[(2\sqrt{2},315)\] the other pair of polar coordinate with negative radius>>(-r,θ+(2k+1)*180) let k=-1 so the other pair \[(-2\sqrt{2},135)\]
anonymous
  • anonymous
oh my god thank you so much @ASAAD123
anonymous
  • anonymous
welcome ^_^ @nanaruiz123
MTALHAHASSAN2
  • MTALHAHASSAN2
woo nice job @ASAAD123

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