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amit : Posted in
Topic :- Math - Sub Topic :- Vector and 3D
Addition of vectors
four diagonals of a parallelopiped and the joins of the mid points of opposite edges are concurrent at acommon point of bisection. 
12/14/2011
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ritu: Replied
Taking as origin, let the position vectors of A, B and C be a, b and c respectively so that those of I), E and F are a+b, b+c, c+a respectively and that of G is a+b+c. If M! be the mid. point of diagonal OG, then M t is a+b+c If Af 2 be the mid. point of diagonal AE and M 2 is a+b+c { e M Similarly mid. point of other diagonals DC and BF is also the point whose position vector is . 4 Again mid. point L of BD is J (b+a+b)=s* ~ and mid. point M of CF is | /. mid. point G of LM is i
12/14/2011
Abuse

 
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