Question

Find the scalar and vector projections of b onto a.
a = (−2, −3, −6) b = (4, −1, 4)

Answer 1

Scalar projection is just \(a\cdot\hat{b}\). Vector projection is \((a\cdot\hat{b})\hat{b}\).

Answer 2

How do I get those values?

Answer 3

Well, first you want to normalize \(b\) to get its direction (unit) vector \(\hat{b}\).

Answer 4

I'm not sure what that means..

Answer 5

Do you know what a projection is?