Distance formula in 3 dimensions

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SUMMARY

The discussion focuses on calculating the shortest distance in three-dimensional space using the Pythagorean theorem. The solution involves determining the hypotenuse (X) of a triangle formed by the height (Z) and length (Y), where X represents the distance from a point on the x-axis to a given point (a, b, c). The key takeaway is that the shortest distance is always a straight line, and visualizing the problem with a triangle aids in understanding the relationship between the coordinates.

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  • Understanding of the Pythagorean theorem
  • Familiarity with three-dimensional coordinate systems
  • Basic knowledge of geometry and triangles
  • Ability to visualize geometric relationships
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Students, mathematicians, and anyone interested in geometry, particularly those working with three-dimensional space and distance calculations.

Rock32
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Edit*: problem solved. Thanks for the hint Dick.
 
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Try the pythagorian theorem: x = sqrt(y^2 + z^2)

Since you can have any value on the x axis, the shortest distance will always be a straight line.

To see it better, draw out a triangle, where Z is the height, and Y is the lenght, leaving the distance X which will be the hypotenuse.

Draw it out, it'll make it clear.

EDIT: X,Y,Z in your case being points A,B,C
 
A point on the x-axis is given by (d,0,0) for some value of d. What value of d will minimize the distance to (a,b,c)?
 

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