Find the direction cosines of the vector joining the points A(1,2,-3) and B(-1, -2, I)directed from A to B.

Explanation

To find the direction cosines of the vector joining the points A(1, 2, -3) and B(-1, -2, 1) directed from A to B, we will follow these steps:

### Step 1: Find the vector AB
The vector AB can be calculated using the formula:
\[ \vec{AB} = \vec{B} - \vec{A} \]
Where:
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