A good answer might be:
The picture is at right.
- The dot product is ( 0.6, 0.8 ) · ( 0.8, 0.6 ) = 0.6*0.8 + 0.8*0.6 = 0.48 + 0.48 = 0.96
- The angle is arc cos( 0.96 ) = 16.26°
The picture is at right.
Consider the following problem: Find the angle between the two vectors:
j = (3, 4)T , k = (0, 2)T
These are not unit vectors, so you can not find the angle between them without further work. As always, draw a sketch first.
What do you suggest doing, so that the angle between the two vectors can be found?