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`        If the planes bx-ay=n, cy-bz=l, az-cx=m, intersect  In a line then al+bm+cn  is equal to `
4 months ago

1453 Points
```							we know that any plane P3 passing through the line of intersection of two planes P1 and P2 is always of the formP3: P1+λP2=0so, here let P1: bx-ay – n=0P2: cy-bz – l=0and P3: az-cx – m=0now, P3 can also be written asbx-ay – n + λ(cy-bz – l)=0or P3: bx + (cλ – a)y – bλz – n – λl = 0but in P3, coeff of y is given to be zero. so cλ – a=0or λ=a/calso, b= – c – bλ=a or a+ba/c=0and n+λl=m or n+al/c=mor nc+al=mc= –mbor al+mb+cn=0
```
4 months ago
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• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
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