## How do you change from rectangular coordinates to spherical coordinates in a triple integral?

- ρ=√r2+z2.
- θ=θ These equations are used to convert from cylindrical coordinates to spherical coordinates.
- φ=arccos(z√r2+z2)

## What is the volume of sphere by triple integration?

Use spherical coordinates to find the volume of the triple integral, where B is a sphere with center ( 0 , 0 , 0 ) (0,0,0) (0,0,0) and radius 4. Using the conversion formula ρ 2 = x 2 + y 2 + z 2 \rho^2=x^2+y^2+z^2 ρ2=x2+y2+z2, we can change the given function into spherical notation.

**How do you convert points from spherical to rectangular coordinates?**

To convert a point from spherical coordinates to Cartesian coordinates, use equations x=ρsinφcosθ,y=ρsinφsinθ, and z=ρcosφ.

**What is PHI in spherical coordinates?**

Phi is the angle between the z-axis and the line connecting the origin and the point. The point (5,0,0) in Cartesian coordinates has spherical coordinates of (5,0,1.57). The surfaces pho=constant, theta=constant, and phi=constant are a sphere, a vertical plane, and a cone (or horizontal plane), respectively.

### What is z in spherical coordinates?

z=ρcosφr=ρsinφ z = ρ cos φ r = ρ sin and these are exactly the formulas that we were looking for. So, given a point in spherical coordinates the cylindrical coordinates of the point will be, r=ρsinφθ=θz=ρcosφ r = ρ sin φ θ = θ z = ρ cos

### How do you write vectors in spherical coordinates?

The unit vectors in the spherical coordinate system are functions of position. It is convenient to express them in terms of the spherical coordinates and the unit vectors of the rectangular coordinate system which are not themselves functions of position. r = xˆ x + yˆ y + zˆ z r = ˆ x sin! cos” + ˆ y sin!

**What is r and theta?**

The Greek letter θ (theta) is often used to denote an angle, and a polar coordinate is conventionally referred to as (r, θ) instead of (x, y). For example, if r is 75 and theta is 45 degrees (or PI/4 radians), we can calculate x and y as below.