Find the polar coordinates that do not describe the point in the given graph.

http://tinypic.com/view.php?pic=2s0xmom&s=8#.UyXt3qhdUS4

(-4, 120°)
(4, 300°)
(4, -240°)
(4, -60°)

Question

Find the polar coordinates that do not describe the point in the given graph.

http://tinypic.com/view.php?pic=2s0xmom&s=8#.UyXt3qhdUS4

(-4, 120°)
(4, 300°)
(4, -240°)
(4, -60°)

anonymous · Answer

I'd really appreciate some help here.

ipwnbunnies · Answer

I hope you didn't see my last post, that's not the case for all points.

ipwnbunnies · Answer

Polar coordinates are in form (r,theta), where r is USUALLY negative. However, if r is in the opposite direction of theta, r can be negative.

ipwnbunnies · Answer

What I advise you to do is take your picture, find where the angle is for each choice, then extend the line to r units, whether positive or negative.

anonymous · Answer

I ended up finding the answer, but thank you for your suggestion.

anonymous · Answer

If I'm correct, it's (4, -240°).

ipwnbunnies · Answer

I believe so. -240 degrees is the same as 120 degrees. Since r=4, the line will extend in the direction of 120 degrees, not the other way, toward 300 degrees.