(701, #11) Find the angle between the vectors a = <1,2,2 > and b = < 3,4,0 >. (First find an exact expression and then approximate to the nearest degree.)
Solution:
First,
= <1,2,2 >
< 3,4,0 > = 11
Furthermore,
= 3,
= 5
Thus,
by: gm
= <1,2,2 >
< 3,4,0 > = 11
= 3,
= 5
