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if the angle between vector a & b is an actute angle , then the difference a-b

if the angle between vector a & b is an actute angle , then the difference a-b

Grade:11

1 Answers

spjp
19 Points
5 years ago
to subtract vector b from vector a we take  the sum of a and -b.So the new angle will be 180-theeta.In this parrticular case the formula becomes whole root of a2+b2+2abcos(180-theeta) or whole root of a2+b2-2abcos theeta where theeta is the acute angle. 

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