ch 12 Vectors Flashcards
1
Q
What is the generalisation for the angle with the x axis?
A
Cos(θ)x = |x|/ |a|
2
Q
What is the generalisation for the angle with the y axis
A
Cos(θ)y = |y| / |a|
3
Q
What is the generalisation for the angle with the z axis
A
Cos(θ) = |z| / |a|
4
Q
How do you work out the length of a 3D vector
A
Square root of x^2+y^2+z^2
5
Q
How to prove that P lines on EF?
A
Prove that they are parallel and
