## sharpsage one year ago Graphing polar coordinates help??

1. amilapsn

yes?

2. sharpsage

$(3,2\pi/3); (-3,2\pi/3)$

3. sharpsage

I have no idea on how to do it

4. amilapsn

Have you an idea about Cartesian coordinate system?

5. sharpsage

Yeah I have a slight idea

6. amilapsn

Cartesian coordinate system is the normal (x,y) system... where you show the position of a point using rectangular coordinates. Likewise, any point in a plane can be shown through an angle from a fixed axis and a length from a fixed origin... Look @ this and you may be get an idea of polar coordinate system....|dw:1433473280875:dw|

7. amilapsn

|dw:1433473362776:dw| Can you tell me the polar coordinates of point A?

8. sharpsage

Is it $(5,30°) or (5,\pi/6)$

9. amilapsn

both are the same...

10. sharpsage

Ok got it

11. amilapsn

you can tell the angle in radians or degrees..

12. sharpsage

What do I do for the(−3,2π/3) coordinate where would I put that.

13. amilapsn

What do you do for the(3,2π/3) coordinate where would you put that?

14. sharpsage

|dw:1433474070454:dw|

15. amilapsn

then where would (-3,2pi/3) be?

16. sharpsage

I'm not sure

17. amilapsn

what do you think about the sign?

18. sharpsage

|dw:1433474418679:dw| would it just be opposite?

19. sharpsage

Whoops I put it on the wrong line I meant the 300 degree line.

20. amilapsn

good...

21. sharpsage

Thank you! That was a huge help.

22. amilapsn

You're welcome...