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Question

ABCDEF is a regular hexagon . Let AB=a and BC=b. Express the vectors AC in terms if a and b.
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A
a+b
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B
ab
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C
2a
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D
None of these
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Solution

The correct option is C a+b
By the triangle law addition,
In triangle ABC
by this law sum of two vector are equal to third vector which is connecting the the tail of vector a and head of b.
So therefore,
AC=a+b


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