A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
find a polar representation for the curve: x^2 + y^2 = 9
anonymous
 4 years ago
find a polar representation for the curve: x^2 + y^2 = 9

This Question is Closed

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0do you remember that \[r^2=x^2+y^2\]

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0satellite I having a moment here doesn't r=3 include the equation r=3?

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0you know when we are talking about polar equations?

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0i would include r=3 just in case because i'm having a memory issue right now

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i think it is just \[r=9\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0r is the radius, always non negative. you want \[r=f(\theta) but here r is constant

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0right i lunched it is \[r=3\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[x=rcos \theta\] \[y=rsin \theta\] r=3\[r ^{2}\cos ^{2}\theta+r ^{2}\sin ^{2}\theta=9\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yeah but this says \[r=3\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0how do i simplify that?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0too much work. r is the radius. it is a constant since you have a circle of radius 3

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0cos^2(theta)+sin^2(theta)=1

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[\cos ^{2}\theta+\sin ^{2}\theta=1\]

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0you don't have to do it that way the easiest is just recalling \[r^2=x^2+y^2\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0you shouldn't think that hard! it is true that \[\cos ^{2}\theta+\sin ^{2}\theta=1\] but that is way too much work

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so it's just r = 3 as my answeR?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yes a circle looks like \[r= number\]

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0r=3 will include all points from the center that have distance 3 from it

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0in polar coordinates a circle is just r = a number?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0r after all stands for "radius" and circle is a figure where the radius is constant

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0here is one where r is not constant http://www.wolframalpha.com/input/?i=r+%3D+1%2Bsin%28theta%29
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.