$\"\"$

The equation in rectangular coordinates is $\"\"$ .

To convert rectangular coordinate system equation to spherical coordinate system,

substitute $\"\"$ , $\"\"$ and $\"\"$ .

$\"\"$

Substitute $\"\"$ and $\"\"$ in above equation.

$\"\"$

Trigonometric identities: $\"\"$ .

$\"\"$

The equation in spherical coordinates is $\"\"$ .

$\"\"$

The equation in spherical coordinates is $\"\"$ .