Find an Equation in Cylindrical Coordinates for the Equation Given $$9 x ^ { 2 } + 9 y ^ { 2 } = 8 x$$

question 89

Multiple Choice

Find an equation in cylindrical coordinates for the equation given in rectangular coordinates. $$9 x ^ { 2 } + 9 y ^ { 2 } = 8 x$$

• A) \(r ^ { 2 } = \frac { 8 } { 9 } \sin \theta\)
• B) \(r = \frac { 8 } { 9 } \sin \theta\)
• C) \(r = \frac { 8 } { 9 } \cos ^ { - 1 } \theta\)
• D) \(r = \frac { 8 } { 9 } \cos \theta\)
• E) \(r = \frac { 9 } { 8 } \cos \theta\)

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