Question

I NEED HELP PLEASE, THANKS!

Find the angle θ between u and v if u = <–9, –8 , 9> and v = <–5, –3, 9>.
47.1°
158.5°
68.5°
21.5°

Answer 1

21.5°

Explanation:

Answer 2

21.5°

option D is the correct option.

Please see the attached picture for full solution..

Hope it helps..

Good luck on your assignment.