How do you convert #r= sec theta# to rectangular form? Trigonometry The Polar System Converting Between Systems 1 Answer Oscar L. Apr 6, 2016 #x=1#. Explanation: Multiply both sides by #\cos(\theta)#, thus #r \cos(\theta)=\sec(\theta)\cos(\theta)=1#. From the conversion between polar and rectangular coordinates we have #x=r \cos(\theta)#. So #x=1#. Answer link Related questions How do you convert rectangular coordinates to polar coordinates? When is it easier to use the polar form of an equation or a rectangular form of an equation? How do you write #r = 4 \cos \theta # into rectangular form? What is the rectangular form of #r = 3 \csc \theta #? What is the polar form of # x^2 + y^2 = 2x#? How do you convert #r \sin^2 \theta =3 \cos \theta# into rectangular form? How do you convert from 300 degrees to radians? How do you convert the polar equation #10 sin(θ)# to the rectangular form? How do you convert the rectangular equation to polar form x=4? How do you find the cartesian graph of #r cos(θ) = 9#? See all questions in Converting Between Systems Impact of this question 22858 views around the world You can reuse this answer Creative Commons License