Convert from polar to rectangular

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Homework Help Overview

The discussion revolves around converting a polar equation into rectangular form, specifically the equation r = 2 / (2 sin(θ) - 3 cos(θ)). The subject area is primarily focused on polar and rectangular coordinate systems in mathematics.

Discussion Character

  • Exploratory, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants discuss using the relationships x = r cos(θ) and y = r sin(θ) to facilitate the conversion. There are attempts to simplify the equation but challenges arise in completing the square and managing the variable r. One participant suggests clearing the fraction as a potential first step.

Discussion Status

Participants are actively engaging with the problem, sharing their attempts and providing hints. There is acknowledgment of helpful guidance, particularly regarding the approach to clearing the fraction and making substitutions. Multiple interpretations of the problem-solving process are being explored.

Contextual Notes

Some participants express difficulty with the algebraic manipulation involved, particularly in relation to the variable r and the polar to rectangular conversion process.

ParoXsitiC
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Homework Statement



Convert the polar equation:

r = [itex]\frac{2}{ 2\,\sin \left( \theta<br /> \right) -3\,\cos \left( \theta \right)}[/itex]

to rectangular form

Homework Equations



x^2 + y^2 = r^2
x = r * cos(theta)
y = r * sin(theta)

The Attempt at a Solution



I tried to to use the x = r cos(theta) technique but had issues simiplifying. Then I tried to x^2+y^2 = r^2 but couldn't complete the square or do anything useful with the r.
 
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ParoXsitiC said:

Homework Statement



Convert the polar equation:

r = [itex]\frac{2}{ 2\,\sin \left( \theta<br /> \right) -3\,\cos \left( \theta \right)}[/itex]

to rectangular form

Homework Equations



x^2 + y^2 = r^2
x = r * cos(theta)
y = r * sin(theta)


The Attempt at a Solution



I tried to to use the x = r cos(theta) technique but had issues simiplifying. Then I tried to x^2+y^2 = r^2 but couldn't complete the square or do anything useful with the r.

Start by clearing the fraction by multiplying both sides by that denominator. Then try your substitutions.
 
2*r*sin(x)-3*r*cos(x)=2

You should be able to figure it out from here.
 
Thanks, that helped a lot. Did not occur to me to divide by r.
 

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