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10 cards from this deck
It shows how much one vector points in another's direction.
It's the size of the vector projection, like a shadow.
Use: a·b / ||b|| for vector a onto vector b.
proj_b(a) = (a·b / ||b||²) b.
Parts at right angles that help recreate the original vector.
Perpendicular: dot product = 0; Parallel: scalar multiple.
Identify the vectors involved, a and b.
To break down forces and measure distances.
It measures the magnitude of the projection of one vector.
They clarify vector parts for solving problems.
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