Expressing cartesian curves in polar form

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SUMMARY

This discussion focuses on converting Cartesian equations to polar form, specifically addressing the equations 4x - 5y = 2 and (x - 3)² + (y - 4)² = 25. The correct polar form for the second equation is r = 9cos(θ - 16°), not r = 9cos(16θ) as initially suggested. The discussion emphasizes the importance of using the correct formulas for conversion, including r = √(x² + y²) and θ = arctan(y/x).

PREREQUISITES
  • Understanding of Cartesian coordinates
  • Familiarity with polar coordinates
  • Knowledge of trigonometric functions
  • Ability to manipulate algebraic equations
NEXT STEPS
  • Study the conversion formulas between Cartesian and polar coordinates
  • Learn how to derive polar equations from standard Cartesian forms
  • Explore the use of trigonometric identities in polar coordinate transformations
  • Practice converting various Cartesian equations to polar form
USEFUL FOR

Mathematics students, educators, and anyone interested in mastering the conversion between Cartesian and polar coordinates.

mariechap89
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Express the following in cartesian curves in polar form
i) 4x-5y=2
Not sure how to do this

ii) (x-3)^2+(y-4)^2=25
r=9cos16(theta)
Is this correct ?

Any help would be great
 
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mariechap89 said:
Express the following in cartesian curves in polar form
i) 4x-5y=2
Not sure how to do this

ii) (x-3)^2+(y-4)^2=25
r=9cos16(theta)
Is this correct ?

Any help would be great

What are the formulas that convert Cartesian coordinates to polar coordinates? Please use the template when posting problems. These templates include a section for relevant equations and formulas.
 

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