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Question 9
r = tan θ
Let tan θ = y/x.
r = y/x
r^2 = (y/x)^2
x^2 + y^2 = (y/x)^2
x^2 + y^2 - (y/x)^2 = 0
You say?
finish
x^2 + y^2 - y^2/x^2= 0.....multiply by x^2
x^2(x^2 + y^2) - y^2= 0.....solve for y
x^2(x^2 + y^2) =y^2
y=sqrt(x^2(x^2 + y^2))
y=x*sqrt(x^2 + y^2)
I prefer so, looks complete