# How do you know when to use spherical or cylindrical coordinates?

## How do you know when to use spherical or cylindrical coordinates?

Use spherical coordinates for the first and cylindrical coordinates for the second.

1. Visualize the 3-dimensional volume that’s being integrated over. Is it a section of a sphere, like this:
2. Or a section of a cylinder, like this:
3. Use spherical coordinates for the first and cylindrical coordinates for the second.

### How do you convert Cartesian coordinates to spherical coordinates?

To convert a point from Cartesian coordinates to spherical coordinates, use equations ρ2=x2+y2+z2,tanθ=yx, and φ=arccos(z√x2+y2+z2). To convert a point from spherical coordinates to cylindrical coordinates, use equations r=ρsinφ,θ=θ, and z=ρcosφ.

#### How do you convert spherical coordinates to cylindrical coordinates?

To convert a point from spherical coordinates to cylindrical coordinates, use equations r=ρsinφ,θ=θ, and z=ρcosφ.

How do spherical coordinates work?

Spherical coordinates determine the position of a point in three-dimensional space based on the distance ρ from the origin and two angles θ and ϕ. If one is familiar with polar coordinates, then the angle θ isn’t too difficult to understand as it is essentially the same as the angle θ from polar coordinates.

Can you use cylindrical coordinates for spheres?

To convert a point from cylindrical coordinates to spherical coordinates, use equations ρ=√r2+z2,θ=θ, and φ=arccos(z√r2+z2).

## What is a sphere in spherical coordinates?

In mathematics, a spherical coordinate system is a coordinate system for three-dimensional space where the position of a point is specified by three numbers: the radial distance of that point from a fixed origin, its polar angle measured from a fixed zenith direction, and the azimuthal angle of its orthogonal …

### How does the spherical coordinate system work?

The spherical coordinate system extends polar coordinates into 3D by using an angle ϕ ϕ for the third coordinate. This gives coordinates (r,θ,ϕ) ( r, θ, ϕ) consisting of: The diagram below shows the spherical coordinates of a point P P.

#### What is the conversion formula for spherical coordinates?

Here are the conversion formulas for spherical coordinates. x = ρsinφcosθ y = ρsinφsinθ z = ρcosφ x2+y2+z2 = ρ2 x = ρ sin

How do spherical coordinates affect the rotation of the basis vectors?

If the spherical coordinates change with time then this causes the spherical basis vectors to rotate with the following angular velocity. Changing r r does not cause a rotation of the basis, while changing θ θ rotates about the vertical axis ^ k k ^ and changing ϕ ϕ rotates about ^ e θ e ^ θ.

What are the conventions for spherical coordinates notation?

There are many different conventions for spherical coordinates notation, so it’s important to check which variant is being used in any document. The convention used here is common in mathematics. In physics it is also common to use the same angles, but to reverse the symbol convention so that ϕ ϕ is the azimuth and θ θ is the inclination.

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