C4 Flashcards
1
Q
What is the general equation of line AB in vector form?
A
—> —>
r = OA + λ AB
2
Q
Give the equation for an angle between 2 vectors
A
cosθ = a . b / |a| |b|
3
Q
When are 2 vectors perpendicular?
A
a . b = 0
cosθ = 0
θ = 90
4
Q
Give the 3 different forms for the equation of a plane.
A
(r-a) . n = 0
r.n = a.n
n1x + n2y + n3z + d =0
