SOLUTION: find the measure of angle A in triangle ABC with vertices at A(7,4), B(1,7) and C(-3,-4)
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Question 1086197: find the measure of angle A in triangle ABC with vertices at A(7,4), B(1,7) and C(-3,-4)
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Use the dot product,
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