anonymous
  • anonymous
How do you write r=2sintheta and r=2sin2theta into polar coordinates?
Mathematics
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anonymous
  • anonymous
How do you write r=2sintheta and r=2sin2theta into polar coordinates?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
it is polar coordinates
anonymous
  • anonymous
r = 2 sin theta, theta is theta
anonymous
  • anonymous
maybe you mean cartesian coordinates?

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anonymous
  • anonymous
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]
anonymous
  • anonymous
oh
anonymous
  • anonymous
yeah ha. Do you know anyone who could help?
anonymous
  • anonymous
yes me, give me medal
anonymous
  • anonymous
I don't know how to?
anonymous
  • anonymous
i just gave you medal
anonymous
  • anonymous
but how
anonymous
  • anonymous
i took it away your medal
anonymous
  • anonymous
solve 2 sin t = 2 sin (2t)
anonymous
  • anonymous
Ah, it's already in polar coordinates. (r, theta)
anonymous
  • anonymous
assume that r1 = r2 , where r1 = 2 sin t , and r2 = 2 sin (2t)
anonymous
  • anonymous
2 sin t = 2 ( 2 sin t cos t )
anonymous
  • anonymous
woah slow down haha
anonymous
  • anonymous
2sin t - 4sint*cost = 0
anonymous
  • anonymous
more medals
anonymous
  • anonymous
2sin t ( 1 - 2 cos t ) = 0
anonymous
  • anonymous
how is that four solutions
anonymous
  • anonymous
solve
anonymous
  • anonymous
solve
anonymous
  • anonymous
solve what?
anonymous
  • anonymous
2sin t = 0 or 1- cos t = 0
anonymous
  • anonymous
helppppp
anonymous
  • anonymous
sin t = 0 when t = 0, pi ,
anonymous
  • anonymous
1- 2 cos t = 0 when cos t = 1/2 , when t = pi/3, 5pi/3
anonymous
  • anonymous
so the solutions are t = { 0, pi, pi/3, 5pi/3}
anonymous
  • anonymous
how do i show the work? what do I write for the equations and what answer goes with which one
anonymous
  • anonymous
Did you use the right equations? 2sint and 2sin2t
anonymous
  • anonymous
never mind i got it. thanks (:

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