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1 Unit 1: Pure Mathematics A

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Question 301

In triangle ABCABCABC, AB=9AB = 9AB=9 cm, BC=7BC = 7BC=7 cm and angle BAC=40°BAC = 40°BAC=40°.

Given that angle ACB ACB\,ACB is obtuse, find the length ACACAC, giving your answer to 3 significant figures.

[5]
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1 Unit 1: Pure Mathematics A Questions

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