Question #2323c

1 Answer
sjc
May 16, 2017

#x^2+y^2-2x=0#

Explanation:

we need the conversion eqns

#r^2=x^2+y^2 --(1)#

#x=rcostheta---(2)#

#y=rsintheta---(3)#

#r=2costheta#

multiply through by #r#

#r^2=2rcostheta#

substituting for #(1) & (2)#

#x^2+y^2=2x#

#x^2+y^2-2x=0#

#=>(x-1)^2+y^2-1=0#

which is a circle centre#" "(1,0)# radius 1

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