🐻‍❄️ Polar coordinates

Polar coordinates & tangent plane

🎯 Demonstration of tangent surface facility in Helion

Parameter	Symbol	Meaning	Range
r	r	radius	≥ 0
polar	θ	angle with respect to +z-axis	[0, π]
azimuth	φ	angle in x-y plane	[0, 2π)

Numeric integration with polar coordinates

🧠 Inspired by original VPython program by Let’s code physics
🐍 A VPython demo is available as well, see integration_with_polar_coordinates.py
🎯 Integration of multivariate functions using polar coordinates