Question: 23. Given [l, 7, 9] and, 5, -31 and [4, -6, 81. a) Find the angle between and W. 13 Marks!
![23. Given [l, 7, 9] and, 5, -31 and [4, -6, 81.](https://s3.amazonaws.com/si.experts.images/answers/2024/06/667a7903dd602_403667a7903b6181.jpg)

23. Given [l, 7, 9] and, 5, -31 and [4, -6, 81. a) Find the angle between and W. 13 Marks!
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