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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Find the vector equation of the plane passing through the point having position vector i^+j^+k^ and perpendicular to the vector 4i^+5j^+6k^.

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प्रश्न

Find the vector equation of the plane passing through the point having position vector `hati + hatj + hatk` and perpendicular to the vector `4hati + 5hatj + 6hatk`.

बेरीज
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उत्तर

Let position vector of point A be `veca` 

`veca = hati + hatj + hatk`,

also `vecn = 4hati + 5hatj + 6hatk`

∴ `veca.vecn = (hati + hatj + hatk).(4hati + 5hatj + 6hatk)`

= (1)(4) + (1)(5) + (1)(6)

= 4 + 5 + 6

= 15     ....(1)

∴ The vector equation of plane is

`vecr.vecn = veca.vecn`

`vecr.(4hati + 5hatj + 6hatk)` = 15    ...[From 1]

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पाठ 6: Line and Plane - Exercise 6.3 [पृष्ठ २१६]
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