In ABC, AB = (x 3) cm, BC = (x + 3) cm, AC = 8

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In △ABC, AB = (x − 3) cm, BC = (x + 3) cm, AC = 8 cm and ∠BAC = 60°. Use the cosine rule to find the value of x.

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Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS

ISBN: 9781292183398

1st Edition

Authors: Greg Attwood

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Question Posted: Jul 15, 2023 02:54 AM

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In ABC, AB = (x 3) cm, BC = (x + 3) cm, AC = 8

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To find the value of x in ABC using the cosine rule we can use the formula cosC a2 b2 c2 2ab where ...View the full answer

Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS

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