SOLUTION: convert the equation from polar to rectangular {{{r=cos(2theta)}}}

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Question 1134426: convert the equation from polar to rectangular
Answer by ikleyn(52810)   (Show Source): You can put this solution on YOUR website!
.
r = 


r =  - 


r =  - 


 =  - 


 =  - .


Or, if you want to avoid radicals, square both sides


 = .


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