In triangle ABC the position vectors of the vertices A, B and C are Find: a. |AB(vector)

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In triangle ABC the position vectors of the vertices A, B and C are


image


Find:


a. |AB(vector) 


b. |AC(vector)| 


c. |BC(vector)|


d. The size of ∠BAC, ∠ABC and ∠ACB to the nearest degree.


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