Spherical Coordinates of a Point with Rectangular Coordinates

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SUMMARY

The spherical coordinates of the point with rectangular coordinates (2√2, -2√2, -4√3) are calculated as (8, -π/4, 5π/6). To derive these values, the formula for ρ is applied, where ρ² = x² + y² + z², resulting in ρ = 8. The angle θ is determined using the arctangent function based on the x and y coordinates, leading to θ = -π/4. The angle φ is calculated using the z coordinate, yielding φ = 5π/6. It is crucial to reference the specific definitions of polar coordinates as outlined in the relevant textbook.

PREREQUISITES
  • Understanding of spherical coordinates and their relationship to rectangular coordinates
  • Familiarity with trigonometric functions, particularly SOH CAH TOA
  • Knowledge of the formulas for converting between coordinate systems
  • Ability to perform basic algebraic calculations involving square roots and angles
NEXT STEPS
  • Study the derivation of spherical coordinates from rectangular coordinates using the formula ρ² = x² + y² + z²
  • Learn about the arctangent function and its application in determining angles in the xy-plane
  • Review the definitions and conventions for polar coordinates in your specific textbook
  • Practice converting various rectangular coordinates to spherical coordinates for better understanding
USEFUL FOR

Students studying multivariable calculus, educators teaching coordinate transformations, and anyone needing to convert between rectangular and spherical coordinates in mathematical applications.

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Homework Statement



Find the spherical coordinates of the point with rectangular coordinates (2√2, -2√2, -4√3)

Homework Equations



?

The Attempt at a Solution



The textbook gives the answer as (8, -pi/4, 5pi/6)
No idea how to get to this. Any help appreciated.
 
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so you need to find \rho \theta and \varphi and you are given (x,y,z) so we know \rho2 = x^2 + y^2 +z^2 and you get \theta from thinking of the graph on the xyz plane and \theta runs on the xy plan and -2\sqrt{2} is from SOH CAH TOA and realizing its just negative 45 degrees ie 45 (\pi/180) =??
 
Here's the set of formulas that define the transformation:

cc4827cadf644c993f17fecf676907e8.png


Note that in the textbook answer the angles have been exchanged.
For the proper set of formulas you should have defined how the polar coordinates have been defined in your textbook. Is expect that your textbook will mention a similar set of formulas.
 

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