# Convert equation from cartesian to spherical

by glog
Tags: cartesian, convert, equation, spherical
 P: 18 This should be relitively simple: y = x ... convert to spherical coords: p*sin(r)*sin(t) = p*sin(r)*cos(t) which reduces to... sin(t) = cos(t) tan(t) = 1 (is this right?) t =~ 0.78... (Can i get a nice fraction for this?) Any help is appreciated. - glog
 P: 1,295 Looks good to me. pi/4 you simply substitute and simplify.
 Math Emeritus Sci Advisor Thanks PF Gold P: 38,707 in other words, "y= x" in spherical coordinates reduces to the set of points where t= $\theta= \pi/4$, r= $\phi$ and p= $\rho$ can be anything. Do you see that that is, in fact, the same as the plane y= x?
P: 18

## Convert equation from cartesian to spherical

yep makes perfect sense....
only one angle is fixed :)

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