koordinat kutub dari (-4,-4)

Convert Cartesian Coordinate to Polar Coordinate.

Q(x, y) = Q(r, θ)
r = √(x² + y²) = √[(-4)² + (-4)²] = 4√2
θ = tan⁻¹ (y / x) = tan⁻¹ (-4 / -4) = 135°
Q(4√2, 135°)