anonymous
  • anonymous
Determine two pairs of polar coordinates for the point (2, -2) with 0° ≤ θ < 360°.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
@welshfella
welshfella
  • welshfella
oh I'm a bit rusty with these |dw:1440266776811:dw|
welshfella
  • welshfella
you'll need to work out the value of R (use the pythagoras theorem and also the measure of angle theta

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welshfella
  • welshfella
I'm a bit confused about 2 pairs of coordinates because angle alpha is negative and they require the range 0 to 360
welshfella
  • welshfella
R is easy to work out its sqrt ((2^2 + (-2)^2)
welshfella
  • welshfella
and tan of angle theta is -2/2 = -1
welshfella
  • welshfella
|dw:1440267438147:dw|
welshfella
  • welshfella
theta = 360 - angle whose tangent is 1

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