Dot and Cross Products Flashcards
1
Q
dot product
A
dot product(u*v) = (u1v1 + u2v2)
2
Q
cosine formula
A
3
Q
orthogonality test
A
dot product(u*v) = 0
means angle between vectors is 90 degrees
4
Q
cross product
A
5
Q
parallelogram
A
length of the cross product of 2 vectors gives the area of a parallelogram
6
Q
area of a triangle
A
1/2 length of cross product of 2 vectors
7
Q
volume of parallelepiped
A
volume of parallelepiped = absolute value (u x v)*w
