How do you convert r=cos(theta) in rectangular form? Precalculus Algebraic Modeling Analyzing Data 1 Answer KillerBunny Dec 4, 2015 x^2+y^2=x Explanation: Multiply both sides by r: r^2=rcos(theta) Use the formulas r^2=x^2+y^2 and x=rcos(theta): x^2+y^2=x Answer link Related questions What are common mistakes students make when assigning variables in data analysis? How do I assign a variable? If a problem says one number is twice as large as another, which number should I choose as my variable? How do I determine whether a given relation is a function? Is the set {(1, 4), (2, 5), (3, 5), (4, 6), (5, 7)} a function? How do you evaluate the limit as x approaches infinity given the function ((3x-2)(2x+1))/x^2? How to express z= 1/(1-i) in polar form? How do you find the factors of f(z) over C if f(z)=2z^3+3z^2-14z-15? Question #f8e6c Demonstrate that 2^n+6^n is divisible by 8 for n=1,2,3,cdots ? See all questions in Analyzing Data Impact of this question 34815 views around the world You can reuse this answer Creative Commons License