## 1994 4 years ago How do you write r=2sintheta and r=2sin2theta into polar coordinates?

1. cantorset

it is polar coordinates

2. cantorset

r = 2 sin theta, theta is theta

3. cantorset

maybe you mean cartesian coordinates?

4. 1994

it says solve the system of equations on the polar plane: then it has those two equations. And says Write your solutions as polar coordinates [hint there are 4]

5. cantorset

oh

6. 1994

yeah ha. Do you know anyone who could help?

7. cantorset

yes me, give me medal

8. 1994

I don't know how to?

9. cantorset

i just gave you medal

10. 1994

but how

11. cantorset

i took it away your medal

12. cantorset

solve 2 sin t = 2 sin (2t)

13. chaguanas

Ah, it's already in polar coordinates. (r, theta)

14. cantorset

assume that r1 = r2 , where r1 = 2 sin t , and r2 = 2 sin (2t)

15. cantorset

2 sin t = 2 ( 2 sin t cos t )

16. 1994

woah slow down haha

17. cantorset

2sin t - 4sint*cost = 0

18. cantorset

more medals

19. cantorset

2sin t ( 1 - 2 cos t ) = 0

20. 1994

how is that four solutions

21. cantorset

solve

22. cantorset

solve

23. 1994

solve what?

24. cantorset

2sin t = 0 or 1- cos t = 0

25. prettychicka45

helppppp

26. cantorset

sin t = 0 when t = 0, pi ,

27. cantorset

1- 2 cos t = 0 when cos t = 1/2 , when t = pi/3, 5pi/3

28. cantorset

so the solutions are t = { 0, pi, pi/3, 5pi/3}

29. 1994

how do i show the work? what do I write for the equations and what answer goes with which one

30. 1994

Did you use the right equations? 2sint and 2sin2t

31. 1994

never mind i got it. thanks (: