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Cross Product
· 3D explorer
generic
i × j = k
j × i = −k
parallel → zero
a
×
b
a × b =
⟨0, 0, 0⟩
|a × b| =
0
|a||b|sin θ =
0
θ =
0°
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vector
a
vector
b
a × b (perpendicular to both)
parallelogram area = |a × b|
curl a→b
a×b ↑