Najd�te ortogon�ln� projekci vektoru {$ \vec v $} na {$ W\subset \subset
\er_{3} $}, kde
$\vec v= (1,0,5),\quad  \vec w_{1}=(2,2,3),\ \vec w_{2}=(1,3,3),\quad
W=[w_{1},w_{2}].
$

Je �hel, kter� sv�raj� vektory {$ \vec v , \vec w_1 $}, men�� ne� {$
\frac{\pi }{2} $}?
