The three points A, B and C, with coordinates A(0, 1), B(3, 4) and C (1, 3)
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. Show that cos ∠ACB = −4/5
b. Calculate the area of △ABC.
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Step by Step Answer:
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 the full answer
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Related Book For 
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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