Curious_individual
New member
- Joined
- Aug 26, 2022
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Hello everyone! I know how to calculate this, but I really struggle to get an intuition for why we do certain things. I understand the distance between 2D points proof. I just have trouble with distance between two 3D points. I provided an image which I was really confused by. We know the distance of P1 and B (x2 - x1)^2 + (y2 - y1)^2.
Let's assume for the rest of this that distance between P1 and B is 10. when we start calculating the distance of P1 and P2 we use pythagoras theorem because we have right angle. Why in the world don't we square the distance between P1 and B, but rather we do "Distance between P1 and P2 = squareroot(10+(z2-z1)^2)
Notes: I mean square with x^2
Let's assume for the rest of this that distance between P1 and B is 10. when we start calculating the distance of P1 and P2 we use pythagoras theorem because we have right angle. Why in the world don't we square the distance between P1 and B, but rather we do "Distance between P1 and P2 = squareroot(10+(z2-z1)^2)
Notes: I mean square with x^2