Question: The three points A, B and C, with coordinates A(0, 1), B(3, 4) and C (1, 3) respectively, are joined to form a triangle. a.

The three points A, B and C, with coordinates A(0, 1), B(3, 4) and C (1, 3) respectively, are joined to form a triangle.

a. Show that cos ∠ACB = −4/5

b. Calculate the area of △ABC.

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a To show that cos ACB 45 we can use the formula for the cosine of an angle in a triangle cos ACB AB... View full answer

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