Five pairs of vectors are shown. In each pair, the magnitude of the vectors A and B are given. For which pair of vectors does the vector difference A...
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Five pairs of vectors are shown. In each pair, the magnitude of the

vectors A and B are given. For which pair of vectors does the vector difference A - B not have a magnitude of 5? 

They all have a magnitude of 5

b

c

e

a

d

VectorSub1.jpg

VectorSub1.jpg

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IMG_20191002_174901.jpg

For two vectors A and B the square of the magnitude
of A -B is given by 52 = ( A-B ). ( A - B )
- A2 + B 2 - A. B - B.A
= AtB - 2 A. B
= ATB - ZABCOSO
[ A . B = BA )
D is the angle between A and B....

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