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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Find the perpendicular distance of origin from the plane 6x − 2y + 3z - 7 = 0

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प्रश्न

Find the perpendicular distance of origin from the plane 6x − 2y + 3z - 7 = 0

बेरीज
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उत्तर

Given equation of plane is 6x – 2y + 3z – 7 = 0

Comparing the given equation with ax + by + cz + d = 0,

we get a = 6, b = – 2, c = 3, d = – 7

∴ Direction cosines are,

l = `6/sqrt(6^2 + (-2)^2 + 3^2)`

m = `(-2)/sqrt(6^2 + (-2)^2 + 3^2)`

n = `3/sqrt(6^2 + (-2)^2 + 3^2)`

∴ l = `6/7, "m" = (-2)/7, "n" = 3/7`

Cartesian equation of a plane in normal form is lx + my + nz = p

∴ `6/7x - 2/7y + 3/7z = 7/7`

∴ `6/7x - 2/7y + 3/zz` = 1

∴ The distance of the origin from the plane is 1.

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पाठ 1.6: Line and Plane - Short Answers I

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