## anonymous 3 years ago Which polar coordinates represent the same point as (4,-pi/2)?..select all that apply a.(-4,-3pi/2) b.(-4,pi/2) c.(4,5pi/2) d.(4,-9pi/2) e.(-4,-pi/2) f.(4,3pi/2)

1. anonymous

|dw:1354567934385:dw|

2. anonymous

first one ends up in the same spot

3. anonymous

so does the second one

4. anonymous

not the third one because it is here |dw:1354568050376:dw|

5. anonymous

4th one is good, count $$\frac{9\pi}{2}$$ going clockwise and you see you end up in the same spot

6. anonymous

is that all?

7. anonymous

that combination was wrong:( i only have one more chance to get it right

8. slaaibak

I get all except c and e

9. anonymous

thank you!