The diagram shows a sketch of a field in the shape of a triangle ABC. Given AB(vector)

Question:

The diagram shows a sketch of a field in the shape of a triangle ABC. Given AB(vector) = 30i + 40j metres and AC(vector) = 40i − 60j metres,


a. Find BC(vector)


b. Find the size of ∠BAC, in degrees, to one decimal place


c. Find the area of the field in square metres.


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