Question

Let vectors a = (2i + 3j + 2k) and b = (i + 2j + k) Find the projection of 

(i) vectors a on b

(i) vectors b on a

Answer 1

  \(\vec{a} =( \vec{2i} + \vec{3j} + \vec{2k})\)

\(\vec{b} = (\vec{i} + \vec{2j} + \vec{k})\)

(i)  \(\frac{5\sqrt{6}}{3}\)

(ii) \(\frac{10\sqrt{17}}{17}\)