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Ksingh30

Vectors

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ok this may be a stupid question, but im a little confused. a Vector (magnitute and direction). so lets say we have a vector V={2,5,7}, now how do we determing the direction? is the direction from origin to that point (2,5,7)?

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Yes.

A vector is little more than a direction with a magnitude (that raw direction being a "normalized" vector). V(3, 5, 7) will generally be right, more upwards than right, and more out of the screen (depending on which +z is) than twice rightwards.

A normalized vector is merely one with length = 1.

V(1,1) is a non-normalized vector that points at a 45 degree angle. V(0,1) points up and is normalized.

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