Find the direction cosines of the line whose direction ratio are a-b,b-c,c-a

Explanation

To find the direction cosines of the line whose direction ratios are given as \( a-b, b-c, c-a \), we can follow these steps:

### Step 1: Identify the Direction Ratios
The direction ratios given are:
- \( l = a - b \)
- \( m = b - c \)
- \( n = c - a \)

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