# Kopi af Vector Projections

Move the points A and B to choose your vectors. Click on "Show Projection" to see the projected vector of a onto b using both algebraic and geometric methods.
Note the calculation shows us how to find the projected vector using their cartesian definition.
Note the picture displays how to find a projection geometrically by constructing a line perpendicular to b that crosses the tip of a.
You can think of the projected vector as the vector a's shadow on b.

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