Chapter 3, Problem 41P

SSM ILW WWW Use the definition of scalar product, $\stackrel{\to }{a}$ · $\stackrel{\to }{b}$= ab cos θ, and the fact that $\stackrel{\to }{a}$ · $\stackrel{\to }{b}$ = a_xb_x + a_yb_y + a_zb_z to calculate the angle between the two vectors given by $\stackrel{\to }{a}$ = 3.0 $\hat{i}$ + 3.0 $\hat{j}$ + 3.0 $\hat{k}$ and $\stackrel{\to }{b}$ = 2.0 $\hat{i}$ + 1.0 $\hat{j}$ + 3.0 $\hat{k}$.