User talk:75.163.119.176

https://en.wikipedia.org/wiki/Spherical_coordinate_system
In the first two figures accompanying the reference article, the angles theta and phi are defined differently, so that their significances interchange from the first figure to the second. This difference is deliberate and in accord with the discussion in the article. But because of this, the coordinates in the second figure should be listed in the order (r, phi, theta)$ instead of their order (r, theta, phi) in the first figure. The result would be that both figures would have their coordinates listed in accord with a right-handed coordinate system even though the definitions of the coordinates switch from the first figure to the second. (Virtually all modern physicists, engineers, and mathematicians use right-handed coordinate systems.) Greg Grunberg (talk) 14:36, 30 December 2022 (UTC)