chalte chalte vectors

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let a,b,c be three vectors such that they hav same mag.
if |a-b|²+|b-c|²+|c-a|²=27
then
a. a,b,c are coplanar
b. a,b,c represent orthogonal triad of vectors
c. a,b,c represents sides of a triangle (atleast in magnitude and direction)
d.the value of a.b+b.c+c.a is minimum in this case

(assume proper notation for vectors...:D)

#Mathematics #3D and Vectors

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5 Answers

Grandmaster ·2009-10-25 07:40:49

anybody interested

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Grandmaster ·2009-10-26 03:41:12

are koi to kuch liko

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Grandmaster ·2009-10-28 06:12:00

are bhai itna bura prob. nahi hai!!!!

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1357

Manish Shankar ·2009-10-29 23:35:55

Is all the information here available

As a, b, c are equal in magnitude (suppose r), they will lie on a sphere of radius r (with centre O)
a-b, b-c, c-a can form the sides of any triangle.

So I cannot tell anything alone from these data..

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Grandmaster ·2009-10-30 05:33:25

its edited..

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chalte chalte vectors

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