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anonymous
 one year ago
Which set of polar coordinates describes the same location as the rectangular coordinates (0,2)?
A. (2,270)
B. (2,0)
C. (2,180)
D. (2,90)
anonymous
 one year ago
Which set of polar coordinates describes the same location as the rectangular coordinates (0,2)? A. (2,270) B. (2,0) C. (2,180) D. (2,90)

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1439171761983:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2plot the point (0,2) on the xy axis system dw:1439171775217:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2how far is this point from the origin?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1439171915517:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2distance can't be negative

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1439171941621:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2what is the angle marked in the drawing dw:1439172003599:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2r = 2 theta = 270 so one possible polar representation is (2,270)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2I use the key term "possible" because there are actually infinitely many ways to do this

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2we can add on multiples of 360 to theta to get other representations

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2and I did say that the distance can't be negative, but in polar form, r can be negative yeah it's a bit strange, but think of it like this if you had the polar point (2,90), you would face the 90 degree direction like normal. Instead of walking forward 2 units, you would walk backward 2 units. This is while facing the 90 degree angle. You don't stop facing this direction

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1439172216337:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1439172238347:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2so in terms of polar points, (2,270) = (2,90)

Loser66
 one year ago
Best ResponseYou've already chosen the best response.0YOu can test the options for a) (2,270) that is r =2, theta = 270 and x = r cos theta = 2 * cos (270) =0 y = r sin theta = 2 *sin (270) = 2*(1) =2 hence it is (0,2) while the given point is (0,2) therefore, a) is not the correct answer. Do the same with other options until you get (0,2), the given point.
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