Question 1201b

Vectors I: Basics, Dot and Cross Products

Unit Vectors

Question

Given that the vector

\mathbf{a} = \begin{pmatrix} - \frac{3}{7} \\ \frac{2}{7} \\ p \end{pmatrix}

is a unit vector, find

{p}

such that

{p\geq 0.}

{p= }