Final answer:
To convert a rectangular equation to a spherical equation, substitute the expressions for x, y, and z in terms of r, theta, and phi into the equation.
Step-by-step explanation:
In spherical coordinates, the relationship between the rectangular coordinates (x, y, z) and the spherical coordinates (r, theta, phi) is given by:
x = r * sin(theta) * cos(phi)
y = r * sin(theta) * sin(phi)
z = r * cos(theta)
So, to convert a rectangular equation to a spherical equation, substitute the expressions for x, y, and z in terms of r, theta, and phi into the equation.