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10 cards from this deck
A value without direction from vector magnitudes and angle.
It is expressed as α · β for vectors α and β.
α · β = |α| |β| cos θ.
It shows the relationship between vector magnitudes and angle.
α · β = a1b1 + a2b2.
Their scalar product equals the product of their magnitudes.
It is zero when vectors are perpendicular.
Use cos θ = α · β / (|α| |β|).
It indicates that the vectors are orthogonal.
It gives the square of the vector's magnitude.
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