Asked by Georgina
3r=-6cosx
I need help converting to rectangular form
also:change to polar co-ordinate form
3xy=5
I need help converting to rectangular form
also:change to polar co-ordinate form
3xy=5
Answers
Answered by
Reiny
Unusual to have an x in a polar form, was expecting
3r = -6cosØ , will assume that.
recall that cosØ = x/r
so
3r = -6x/r
3r^2 = -6x
x^2 + y^2 = -6x
for 3xy = 5
cosØ = x/r ---> x = rcosØ
and sinØ = y/r --> y = sinØ
3(rcosØ)(rsinØ) = 5
3r^2 sinØcosØ = 5
3r = -6cosØ , will assume that.
recall that cosØ = x/r
so
3r = -6x/r
3r^2 = -6x
x^2 + y^2 = -6x
for 3xy = 5
cosØ = x/r ---> x = rcosØ
and sinØ = y/r --> y = sinØ
3(rcosØ)(rsinØ) = 5
3r^2 sinØcosØ = 5
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