How to Convert Spherical Coordinates to Cartesian Coordinates in an Equation?

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SUMMARY

The discussion focuses on converting spherical coordinates to Cartesian coordinates using the equations x = r*cos(Ɵ)*sin(Ø), y = r*sin(Ɵ)*sin(Ø), and z = r. The user clarifies that if B is a constant and Ø equals 0, the coordinates simplify to <0, 0, Bz>, indicating a position along the z-axis where θ becomes irrelevant. The transformation highlights the relationship between spherical and Cartesian coordinates in three-dimensional space.

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Philosophaie
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I have an equation:

Br*r + BƟ*Ɵ

BØ = 0

I want to change it into x,y,z. How do I do this?

x=r*cosƟ*sinØ = 0
y=r*sinƟ*sinØ = 0
z=r*cosØ = r

?
 
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Is B a constant? If so then we have \phi= 0 which means we are on the z-axis and \theta becomes irrelevant. \vec{r}, the unit vector pointing directly away from the origin must be <0, 0, 1> "Br*]b]r[/b] + BƟ*Ɵ" becomes just <0, 0, Bz>.
 

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