For any triangle, show that where Use a Half-angle Formula and the Law of Cosines. s(s

Question:

For any triangle, show that

s(s – c) cos 2 ab ||

where

(a + b + c).

Use a Half-angle Formula and the Law of Cosines.

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Related Book For answer-question

Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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Question Posted: Mar 09, 2019 10:28 AM

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For any triangle, show that where Use a Half-angle Formula and the Law of Cosines. s(s

Question:

s(s – c) cos 2 ab || (a + b + c).

Step by Step Answer:

22 COS 1cos C 2 1 ...View the full answer

Precalculus

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