Identifying Surfaces in Spherical Coordinates

josh28
Messages
4
Reaction score
0

Homework Statement


\rho = sin\theta * sin\phi


Homework Equations


I know that \rho^{2} = x^{2} + y^{2}+z^{2}


The Attempt at a Solution


I tried converting it to cartesian coordinates but I can't seem to get a workable answer that way. I know that the answer is the sphere with radius 1/2 and center (0,1/2,0) but I have no idea how to get there.

Thank you!
 
Last edited:
Physics news on Phys.org
josh28 said:

Homework Statement


\rho = sin\theta * sin\phi


Homework Equations


I know that \rho^{2} = x^{2} + y^{2}+z^{2}
What are the other equations that relate spherical to rectangular coordinates?
josh28 said:

The Attempt at a Solution


I tried converting it to cartesian coordinates but I can't seem to get a workable answer that way. I know that the answer is the sphere with radius 1/2 and center (0,1/2,0) but I have no idea how to get there.

Multiply each side of this equation by rho.
\rho = sin\theta * sin\phi

After that, use the conversion equations to convert everything to rectangular coordinates.
 
Thank you!
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
Back
Top