A is the point (3, 4, 8), B is the point (1, 2, 5) and C is

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A is the point (3, 4, 8), B is the point (1, −2, 5) and C is the point (7, −5, 7).

a. Find the vectors AB, AC and BC .

b. Hence find the lengths of the sides of triangle ABC.

c. Given that angle ABC = 90° find the size of angle BAC.

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

ISBN: 9781292183404

1st Edition

Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran

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Question Posted: Aug 21, 2023 06:31 AM

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A is the point (3, 4, 8), B is the point (1, 2, 5) and C is

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

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