Spherical coordinate system

The spherical coordinate system is a way to locate points in 3D space using three values: radius (distance from the origin), inclination (angle from the positive z-axis), and azimuth (angle from the x-axis in the x-y plane). Imagine standing at the center of a globe: your distance from the center is the radius, your tilt up or down is the inclination, and your direction around the equator is the azimuth. This system is especially useful in fields like physics and engineering for describing positions on spheres or in spherical objects.