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- Thread starter san203
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Position in a plane: (x,y)

Position vector in a plane: vector from (0,0) to (x,y)

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But isn't position in plane also calculated relative to origin?Position in a plane: (x,y)

Position vector in a plane: vector from (0,0) to (x,y)

Sorry. I didnt understand that at all.

Edit#2 : Thanks. Your answers were right i guess.

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throughthe sphere? The answer, of course, is that the onlytruevectors aretangentvectors that lie in the tangent plane to the surface at each point.

This really went over my head, but when i do learn things like this i'll try to keep what you said in mind.

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A position vector is a vector in Euclidean space that points from the origin to your location

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If you are studying Euclidean Geometry, based on the Elements, there are no numbers (at least for many books there is no need of numbers). So a position might be described as the intersection of two lines, or the center of a circle. In this case, there is no position vector, only a position. You are working in a Euclidean space that does not have the usual Vector Space information available.

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