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1 Unit 1: Pure Mathematics A

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Question 253

The points AAA, B B\,B and C C\,C have coordinates (−2,1)(-2, 1)(−2,1), (6,5)(6, 5)(6,5) and (8,1)(8, 1)(8,1) respectively.

a.

Show that AB AB\,AB is perpendicular to BCBCBC.

[3]
b.

Hence find the area of triangle ABCABCABC.

[3]
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1 Unit 1: Pure Mathematics A Questions

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