P is the point (5, 6, 2), Q is the point (2, 2, 1) and R is

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P is the point (5, 6, −2), Q is the point (2, −2, 1) and R is the point (2, −3, 6). 

a. Find the vectors PQ, PR and QR.

b. Hence, or otherwise, find the area of triangle PQR.

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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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