Question: In triangle ABC, AB(vector) = 4i + 3j, AC(vector) = 6i 4j. a. Find the angle between AB(vector) and i. b. Find the angle

In triangle ABC, AB(vector) = 4i + 3j, AC(vector) = 6i − 4j.


a. Find the angle between AB(vector) and i.


b. Find the angle between AC(vector) and i.


c. Hence find the size of ∠BAC, in degrees, to one decimal place.


A B C

A B C

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