Expressing cartesian curves in polar form

[mariechap89]

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

 

[Mark44]

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.