- #1
clickcaptain
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Could someone tell me what I'm doing wrong? thanks!
Write the equation is cylindrical coordinates
7x2 + 7y2 = 2y
r = ? (has to be in the r = ? format)
r2 = x2 +y2
x = rcos(θ)
y = rsin(θ)
7x2 + 7y2 = 2y
7(x2 + y2) = 2y
7(r2 = 2rsin(θ)
r2 = (2rsin(θ))/7
r = sqrt((2rsin(θ))/7)
Homework Statement
Write the equation is cylindrical coordinates
7x2 + 7y2 = 2y
r = ? (has to be in the r = ? format)
Homework Equations
r2 = x2 +y2
x = rcos(θ)
y = rsin(θ)
The Attempt at a Solution
7x2 + 7y2 = 2y
7(x2 + y2) = 2y
7(r2 = 2rsin(θ)
r2 = (2rsin(θ))/7
r = sqrt((2rsin(θ))/7)