Respuesta :
D
to convert from polar to rectangular form use
• cosΘ = [tex]\frac{x}{r}[/tex]
• r² = x² + y²
r = 8 × [tex]\frac{x}{r}[/tex] ( multiply both sides by r )
r² = 8x, hence
x² + y² = 8x ← in rectangular form
Answer: D. x² + y² = 8x
Step-by-step explanation: I got this right on Edmentum.