In this lesson, we review how to convert between polar and rectangular coordinates using x = rcosθ, y = rsinθ, and r² = x² + y². I walk through step-by-step examples of converting both directions and explain how to correctly plot points in polar coordinates. We also cover how the same point can be represented in multiple ways (including using negative r values and different angles) and how to recognize equivalent coordinates. This is a great review for Precalculus students preparing for tests or needing a refresher on polar concepts!
